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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsNativeThemeCocoa.h"
#include "nsObjCExceptions.h"
#include "nsRangeFrame.h"
#include "nsRenderingContext.h"
#include "nsRect.h"
#include "nsSize.h"
#include "nsThemeConstants.h"
#include "nsIPresShell.h"
#include "nsPresContext.h"
#include "nsIContent.h"
#include "nsIDocument.h"
#include "nsIFrame.h"
#include "nsIAtom.h"
#include "nsEventStates.h"
#include "nsINameSpaceManager.h"
#include "nsPresContext.h"
#include "nsGkAtoms.h"
#include "nsCocoaFeatures.h"
#include "nsCocoaWindow.h"
#include "nsNativeThemeColors.h"
#include "nsIScrollableFrame.h"
#include "nsIDOMHTMLMeterElement.h"
#include "mozilla/dom/Element.h"
#include "nsLookAndFeel.h"
#include "gfxContext.h"
#include "gfxQuartzSurface.h"
#include "gfxQuartzNativeDrawing.h"
#include <algorithm>
#define DRAW_IN_FRAME_DEBUG 0
#define SCROLLBARS_VISUAL_DEBUG 0
// private Quartz routines needed here
extern "C" {
CG_EXTERN void CGContextSetCTM(CGContextRef, CGAffineTransform);
}
// Workaround for NSCell control tint drawing
// Without this workaround, NSCells are always drawn with the clear control tint
// as long as they're not attached to an NSControl which is a subview of an active window.
// XXXmstange Why doesn't Webkit need this?
@implementation NSCell (ControlTintWorkaround)
- (int)_realControlTint { return [self controlTint]; }
@end
// The purpose of this class is to provide objects that can be used when drawing
// NSCells using drawWithFrame:inView: without causing any harm. The only
// messages that will be sent to such an object are "isFlipped" and
// "currentEditor": isFlipped needs to return YES in order to avoid drawing bugs
// on 10.4 (see bug 465069); currentEditor (which isn't even a method of
// NSView) will be called when drawing search fields, and we only provide it in
// order to prevent "unrecognized selector" exceptions.
// There's no need to pass the actual NSView that we're drawing into to
// drawWithFrame:inView:. What's more, doing so even causes unnecessary
// invalidations as soon as we draw a focusring!
@interface CellDrawView : NSView
@end;
@implementation CellDrawView
- (BOOL)isFlipped
{
return YES;
}
- (NSText*)currentEditor
{
return nil;
}
@end
/**
* NSProgressBarCell is used to draw progress bars of any size.
*/
@interface NSProgressBarCell : NSCell
{
/*All instance variables are private*/
double mValue;
double mMax;
bool mIsIndeterminate;
bool mIsHorizontal;
}
- (void)setValue:(double)value;
- (double)value;
- (void)setMax:(double)max;
- (double)max;
- (void)setIndeterminate:(bool)aIndeterminate;
- (bool)isIndeterminate;
- (void)setHorizontal:(bool)aIsHorizontal;
- (bool)isHorizontal;
- (void)drawWithFrame:(NSRect)cellFrame inView:(NSView *)controlView;
@end
@implementation NSProgressBarCell
- (void)setMax:(double)aMax
{
mMax = aMax;
}
- (double)max
{
return mMax;
}
- (void)setValue:(double)aValue
{
mValue = aValue;
}
- (double)value
{
return mValue;
}
- (void)setIndeterminate:(bool)aIndeterminate
{
mIsIndeterminate = aIndeterminate;
}
- (bool)isIndeterminate
{
return mIsIndeterminate;
}
- (void)setHorizontal:(bool)aIsHorizontal
{
mIsHorizontal = aIsHorizontal;
}
- (bool)isHorizontal
{
return mIsHorizontal;
}
- (void)drawWithFrame:(NSRect)cellFrame inView:(NSView *)controlView
{
CGContext* cgContext = (CGContextRef)[[NSGraphicsContext currentContext] graphicsPort];
HIThemeTrackDrawInfo tdi;
tdi.version = 0;
tdi.min = 0;
tdi.value = INT32_MAX * (mValue / mMax);
tdi.max = INT32_MAX;
tdi.bounds = NSRectToCGRect(cellFrame);
tdi.attributes = mIsHorizontal ? kThemeTrackHorizontal : 0;
tdi.enableState = [self controlTint] == NSClearControlTint ? kThemeTrackInactive
: kThemeTrackActive;
NSControlSize size = [self controlSize];
if (size == NSRegularControlSize) {
tdi.kind = mIsIndeterminate ? kThemeLargeIndeterminateBar
: kThemeLargeProgressBar;
} else {
NS_ASSERTION(size == NSSmallControlSize,
"We shouldn't have another size than small and regular for the moment");
tdi.kind = mIsIndeterminate ? kThemeMediumIndeterminateBar
: kThemeMediumProgressBar;
}
int32_t stepsPerSecond = mIsIndeterminate ? 60 : 30;
int32_t milliSecondsPerStep = 1000 / stepsPerSecond;
tdi.trackInfo.progress.phase = uint8_t(PR_IntervalToMilliseconds(PR_IntervalNow()) /
milliSecondsPerStep);
HIThemeDrawTrack(&tdi, NULL, cgContext, kHIThemeOrientationNormal);
}
@end
@interface ContextAwareSearchFieldCell : NSSearchFieldCell
{
nsIFrame* mContext;
}
// setContext: stores the searchfield nsIFrame so that it can be consulted
// during painting. Please reset this by calling setContext:nullptr as soon as
// you're done with painting because we don't want to keep a dangling pointer.
- (void)setContext:(nsIFrame*)aContext;
@end
@implementation ContextAwareSearchFieldCell
- (id)initTextCell:(NSString*)aString
{
if ((self = [super initTextCell:aString])) {
mContext = nullptr;
}
return self;
}
- (void)setContext:(nsIFrame*)aContext
{
mContext = aContext;
}
static BOOL IsToolbarStyleContainer(nsIFrame* aFrame)
{
nsIContent* content = aFrame->GetContent();
if (!content)
return NO;
if (content->Tag() == nsGkAtoms::toolbar ||
content->Tag() == nsGkAtoms::toolbox ||
content->Tag() == nsGkAtoms::statusbar)
return YES;
switch (aFrame->StyleDisplay()->mAppearance) {
case NS_THEME_TOOLBAR:
case NS_THEME_MOZ_MAC_UNIFIED_TOOLBAR:
case NS_THEME_STATUSBAR:
return YES;
default:
return NO;
}
}
- (BOOL)_isToolbarMode
{
// On 10.7, searchfields have two different styles, depending on whether
// the searchfield is on top of of window chrome. This function is called on
// 10.7 during drawing in order to determine which style to use.
for (nsIFrame* frame = mContext; frame; frame = frame->GetParent()) {
if (IsToolbarStyleContainer(frame)) {
return YES;
}
}
return NO;
}
@end
// Workaround for Bug 542048
// On 64-bit, NSSearchFieldCells don't draw focus rings.
#if defined(__x86_64__)
static void DrawFocusRing(NSRect rect, float radius)
{
NSSetFocusRingStyle(NSFocusRingOnly);
NSBezierPath* path = [NSBezierPath bezierPath];
rect = NSInsetRect(rect, radius, radius);
[path appendBezierPathWithArcWithCenter:NSMakePoint(NSMinX(rect), NSMinY(rect)) radius:radius startAngle:180.0 endAngle:270.0];
[path appendBezierPathWithArcWithCenter:NSMakePoint(NSMaxX(rect), NSMinY(rect)) radius:radius startAngle:270.0 endAngle:360.0];
[path appendBezierPathWithArcWithCenter:NSMakePoint(NSMaxX(rect), NSMaxY(rect)) radius:radius startAngle: 0.0 endAngle: 90.0];
[path appendBezierPathWithArcWithCenter:NSMakePoint(NSMinX(rect), NSMaxY(rect)) radius:radius startAngle: 90.0 endAngle:180.0];
[path closePath];
[path fill];
}
@interface SearchFieldCellWithFocusRing : ContextAwareSearchFieldCell {} @end
@implementation SearchFieldCellWithFocusRing
- (void)drawWithFrame:(NSRect)rect inView:(NSView*)controlView
{
[super drawWithFrame:rect inView:controlView];
if ([self showsFirstResponder]) {
DrawFocusRing(rect, NSHeight(rect) / 2);
}
}
@end
#endif
// Copied from nsLookAndFeel.h
// Apple hasn't defined a constant for scollbars with two arrows on each end, so we'll use this one.
static const int kThemeScrollBarArrowsBoth = 2;
#define HITHEME_ORIENTATION kHIThemeOrientationNormal
#define MAX_FOCUS_RING_WIDTH 4
// These enums are for indexing into the margin array.
enum {
leopardOS = 0
};
enum {
miniControlSize,
smallControlSize,
regularControlSize
};
enum {
leftMargin,
topMargin,
rightMargin,
bottomMargin
};
static int EnumSizeForCocoaSize(NSControlSize cocoaControlSize) {
if (cocoaControlSize == NSMiniControlSize)
return miniControlSize;
else if (cocoaControlSize == NSSmallControlSize)
return smallControlSize;
else
return regularControlSize;
}
static NSControlSize CocoaSizeForEnum(int32_t enumControlSize) {
if (enumControlSize == miniControlSize)
return NSMiniControlSize;
else if (enumControlSize == smallControlSize)
return NSSmallControlSize;
else
return NSRegularControlSize;
}
static NSString* CUIControlSizeForCocoaSize(NSControlSize aControlSize)
{
if (aControlSize == NSRegularControlSize)
return @"regular";
else if (aControlSize == NSSmallControlSize)
return @"small";
else
return @"mini";
}
static void InflateControlRect(NSRect* rect, NSControlSize cocoaControlSize, const float marginSet[][3][4])
{
if (!marginSet)
return;
static int osIndex = leopardOS;
int controlSize = EnumSizeForCocoaSize(cocoaControlSize);
const float* buttonMargins = marginSet[osIndex][controlSize];
rect->origin.x -= buttonMargins[leftMargin];
rect->origin.y -= buttonMargins[bottomMargin];
rect->size.width += buttonMargins[leftMargin] + buttonMargins[rightMargin];
rect->size.height += buttonMargins[bottomMargin] + buttonMargins[topMargin];
}
static NSWindow* NativeWindowForFrame(nsIFrame* aFrame,
nsIWidget** aTopLevelWidget = NULL)
{
if (!aFrame)
return nil;
nsIWidget* widget = aFrame->GetNearestWidget();
if (!widget)
return nil;
nsIWidget* topLevelWidget = widget->GetTopLevelWidget();
if (aTopLevelWidget)
*aTopLevelWidget = topLevelWidget;
return (NSWindow*)topLevelWidget->GetNativeData(NS_NATIVE_WINDOW);
}
static BOOL FrameIsInActiveWindow(nsIFrame* aFrame)
{
nsIWidget* topLevelWidget = NULL;
NSWindow* win = NativeWindowForFrame(aFrame, &topLevelWidget);
if (!topLevelWidget || !win)
return YES;
// XUL popups, e.g. the toolbar customization popup, can't become key windows,
// but controls in these windows should still get the active look.
nsWindowType windowType;
topLevelWidget->GetWindowType(windowType);
if (windowType == eWindowType_popup)
return YES;
if ([win isSheet])
return [win isKeyWindow];
return [win isMainWindow] && ![win attachedSheet];
}
// Toolbar controls and content controls respond to different window
// activeness states.
static BOOL IsActive(nsIFrame* aFrame, BOOL aIsToolbarControl)
{
if (aIsToolbarControl)
return [NativeWindowForFrame(aFrame) isMainWindow];
return FrameIsInActiveWindow(aFrame);
}
NS_IMPL_ISUPPORTS_INHERITED1(nsNativeThemeCocoa, nsNativeTheme, nsITheme)
nsNativeThemeCocoa::nsNativeThemeCocoa()
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
// provide a local autorelease pool, as this is called during startup
// before the main event-loop pool is in place
nsAutoreleasePool pool;
mPushButtonCell = [[NSButtonCell alloc] initTextCell:nil];
[mPushButtonCell setButtonType:NSMomentaryPushInButton];
[mPushButtonCell setHighlightsBy:NSPushInCellMask];
mRadioButtonCell = [[NSButtonCell alloc] initTextCell:nil];
[mRadioButtonCell setButtonType:NSRadioButton];
mCheckboxCell = [[NSButtonCell alloc] initTextCell:nil];
[mCheckboxCell setButtonType:NSSwitchButton];
[mCheckboxCell setAllowsMixedState:YES];
#if defined(__x86_64__)
mSearchFieldCell = [[SearchFieldCellWithFocusRing alloc] initTextCell:@""];
#else
mSearchFieldCell = [[ContextAwareSearchFieldCell alloc] initTextCell:@""];
#endif
[mSearchFieldCell setBezelStyle:NSTextFieldRoundedBezel];
[mSearchFieldCell setBezeled:YES];
[mSearchFieldCell setEditable:YES];
[mSearchFieldCell setFocusRingType:NSFocusRingTypeExterior];
mDropdownCell = [[NSPopUpButtonCell alloc] initTextCell:@"" pullsDown:NO];
mComboBoxCell = [[NSComboBoxCell alloc] initTextCell:@""];
[mComboBoxCell setBezeled:YES];
[mComboBoxCell setEditable:YES];
[mComboBoxCell setFocusRingType:NSFocusRingTypeExterior];
mProgressBarCell = [[NSProgressBarCell alloc] init];
mMeterBarCell = [[NSLevelIndicatorCell alloc]
initWithLevelIndicatorStyle:NSContinuousCapacityLevelIndicatorStyle];
mCellDrawView = [[CellDrawView alloc] init];
NS_OBJC_END_TRY_ABORT_BLOCK;
}
nsNativeThemeCocoa::~nsNativeThemeCocoa()
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
[mMeterBarCell release];
[mProgressBarCell release];
[mPushButtonCell release];
[mRadioButtonCell release];
[mCheckboxCell release];
[mSearchFieldCell release];
[mDropdownCell release];
[mComboBoxCell release];
[mCellDrawView release];
NS_OBJC_END_TRY_ABORT_BLOCK;
}
// Limit on the area of the target rect (in pixels^2) in
// DrawCellWithScaling(), DrawButton() and DrawScrollbar(), above which we
// don't draw the object into a bitmap buffer. This is to avoid crashes in
// [NSGraphicsContext graphicsContextWithGraphicsPort:flipped:] and
// CGContextDrawImage(), and also to avoid very poor drawing performance in
// CGContextDrawImage() when it scales the bitmap (particularly if xscale or
// yscale is less than but near 1 -- e.g. 0.9). This value was determined
// by trial and error, on OS X 10.4.11 and 10.5.4, and on systems with
// different amounts of RAM.
#define BITMAP_MAX_AREA 500000
static int
GetBackingScaleFactorForRendering(CGContextRef cgContext)
{
CGAffineTransform ctm = CGContextGetUserSpaceToDeviceSpaceTransform(cgContext);
CGRect transformedUserSpacePixel = CGRectApplyAffineTransform(CGRectMake(0, 0, 1, 1), ctm);
float maxScale = std::max(fabs(transformedUserSpacePixel.size.width),
fabs(transformedUserSpacePixel.size.height));
return maxScale > 1.0 ? 2 : 1;
}
/*
* Draw the given NSCell into the given cgContext.
*
* destRect - the size and position of the resulting control rectangle
* controlSize - the NSControlSize which will be given to the NSCell before
* asking it to render
* naturalSize - The natural dimensions of this control.
* If the control rect size is not equal to either of these, a scale
* will be applied to the context so that rendering the control at the
* natural size will result in it filling the destRect space.
* If a control has no natural dimensions in either/both axes, pass 0.0f.
* minimumSize - The minimum dimensions of this control.
* If the control rect size is less than the minimum for a given axis,
* a scale will be applied to the context so that the minimum is used
* for drawing. If a control has no minimum dimensions in either/both
* axes, pass 0.0f.
* marginSet - an array of margins; a multidimensional array of [2][3][4],
* with the first dimension being the OS version (Tiger or Leopard),
* the second being the control size (mini, small, regular), and the third
* being the 4 margin values (left, top, right, bottom).
* view - The NSView that we're drawing into. As far as I can tell, it doesn't
* matter if this is really the right view; it just has to return YES when
* asked for isFlipped. Otherwise we'll get drawing bugs on 10.4.
* mirrorHorizontal - whether to mirror the cell horizontally
*/
static void DrawCellWithScaling(NSCell *cell,
CGContextRef cgContext,
const HIRect& destRect,
NSControlSize controlSize,
NSSize naturalSize,
NSSize minimumSize,
const float marginSet[][3][4],
NSView* view,
BOOL mirrorHorizontal)
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
NSRect drawRect = NSMakeRect(destRect.origin.x, destRect.origin.y, destRect.size.width, destRect.size.height);
if (naturalSize.width != 0.0f)
drawRect.size.width = naturalSize.width;
if (naturalSize.height != 0.0f)
drawRect.size.height = naturalSize.height;
// Keep aspect ratio when scaling if one dimension is free.
if (naturalSize.width == 0.0f && naturalSize.height != 0.0f)
drawRect.size.width = destRect.size.width * naturalSize.height / destRect.size.height;
if (naturalSize.height == 0.0f && naturalSize.width != 0.0f)
drawRect.size.height = destRect.size.height * naturalSize.width / destRect.size.width;
// Honor minimum sizes.
if (drawRect.size.width < minimumSize.width)
drawRect.size.width = minimumSize.width;
if (drawRect.size.height < minimumSize.height)
drawRect.size.height = minimumSize.height;
[NSGraphicsContext saveGraphicsState];
// Only skip the buffer if the area of our cell (in pixels^2) is too large.
if (drawRect.size.width * drawRect.size.height > BITMAP_MAX_AREA) {
// Inflate the rect Gecko gave us by the margin for the control.
InflateControlRect(&drawRect, controlSize, marginSet);
NSGraphicsContext* savedContext = [NSGraphicsContext currentContext];
[NSGraphicsContext setCurrentContext:[NSGraphicsContext graphicsContextWithGraphicsPort:cgContext flipped:YES]];
[cell drawWithFrame:drawRect inView:view];
[NSGraphicsContext setCurrentContext:savedContext];
}
else {
float w = ceil(drawRect.size.width);
float h = ceil(drawRect.size.height);
NSRect tmpRect = NSMakeRect(MAX_FOCUS_RING_WIDTH, MAX_FOCUS_RING_WIDTH, w, h);
// inflate to figure out the frame we need to tell NSCell to draw in, to get something that's 0,0,w,h
InflateControlRect(&tmpRect, controlSize, marginSet);
// and then, expand by MAX_FOCUS_RING_WIDTH size to make sure we can capture any focus ring
w += MAX_FOCUS_RING_WIDTH * 2.0;
h += MAX_FOCUS_RING_WIDTH * 2.0;
int backingScaleFactor = GetBackingScaleFactorForRendering(cgContext);
CGColorSpaceRef rgb = CGColorSpaceCreateDeviceRGB();
CGContextRef ctx = CGBitmapContextCreate(NULL,
(int) w * backingScaleFactor, (int) h * backingScaleFactor,
8, (int) w * backingScaleFactor * 4,
rgb, kCGImageAlphaPremultipliedFirst);
CGColorSpaceRelease(rgb);
// We need to flip the image twice in order to avoid drawing bugs on 10.4, see bug 465069.
// This is the first flip transform, applied to cgContext.
CGContextScaleCTM(cgContext, 1.0f, -1.0f);
CGContextTranslateCTM(cgContext, 0.0f, -(2.0 * destRect.origin.y + destRect.size.height));
if (mirrorHorizontal) {
CGContextScaleCTM(cgContext, -1.0f, 1.0f);
CGContextTranslateCTM(cgContext, -(2.0 * destRect.origin.x + destRect.size.width), 0.0f);
}
NSGraphicsContext* savedContext = [NSGraphicsContext currentContext];
[NSGraphicsContext setCurrentContext:[NSGraphicsContext graphicsContextWithGraphicsPort:ctx flipped:YES]];
CGContextScaleCTM(ctx, backingScaleFactor, backingScaleFactor);
// This is the second flip transform, applied to ctx.
CGContextScaleCTM(ctx, 1.0f, -1.0f);
CGContextTranslateCTM(ctx, 0.0f, -(2.0 * tmpRect.origin.y + tmpRect.size.height));
[cell drawWithFrame:tmpRect inView:view];
[NSGraphicsContext setCurrentContext:savedContext];
CGImageRef img = CGBitmapContextCreateImage(ctx);
// Drop the image into the original destination rectangle, scaling to fit
// Only scale MAX_FOCUS_RING_WIDTH by xscale/yscale when the resulting rect
// doesn't extend beyond the overflow rect
float xscale = destRect.size.width / drawRect.size.width;
float yscale = destRect.size.height / drawRect.size.height;
float scaledFocusRingX = xscale < 1.0f ? MAX_FOCUS_RING_WIDTH * xscale : MAX_FOCUS_RING_WIDTH;
float scaledFocusRingY = yscale < 1.0f ? MAX_FOCUS_RING_WIDTH * yscale : MAX_FOCUS_RING_WIDTH;
CGContextDrawImage(cgContext, CGRectMake(destRect.origin.x - scaledFocusRingX,
destRect.origin.y - scaledFocusRingY,
destRect.size.width + scaledFocusRingX * 2,
destRect.size.height + scaledFocusRingY * 2),
img);
CGImageRelease(img);
CGContextRelease(ctx);
}
[NSGraphicsContext restoreGraphicsState];
#if DRAW_IN_FRAME_DEBUG
CGContextSetRGBFillColor(cgContext, 0.0, 0.0, 0.5, 0.25);
CGContextFillRect(cgContext, destRect);
#endif
NS_OBJC_END_TRY_ABORT_BLOCK;
}
struct CellRenderSettings {
// The natural dimensions of the control.
// If a control has no natural dimensions in either/both axes, set to 0.0f.
NSSize naturalSizes[3];
// The minimum dimensions of the control.
// If a control has no minimum dimensions in either/both axes, set to 0.0f.
NSSize minimumSizes[3];
// A three-dimensional array,
// with the first dimension being the OS version (only Leopard for the moment),
// the second being the control size (mini, small, regular), and the third
// being the 4 margin values (left, top, right, bottom).
float margins[1][3][4];
};
/*
* This is a helper method that returns the required NSControlSize given a size
* and the size of the three controls plus a tolerance.
* size - The width or the height of the element to draw.
* sizes - An array with the all the width/height of the element for its
* different sizes.
* tolerance - The tolerance as passed to DrawCellWithSnapping.
* NOTE: returns NSRegularControlSize if all values in 'sizes' are zero.
*/
static NSControlSize FindControlSize(CGFloat size, const CGFloat* sizes, CGFloat tolerance)
{
for (uint32_t i = miniControlSize; i <= regularControlSize; ++i) {
if (sizes[i] == 0) {
continue;
}
CGFloat next = 0;
// Find next value.
for (uint32_t j = i+1; j <= regularControlSize; ++j) {
if (sizes[j] != 0) {
next = sizes[j];
break;
}
}
// If it's the latest value, we pick it.
if (next == 0) {
return CocoaSizeForEnum(i);
}
if (size <= sizes[i] + tolerance && size < next) {
return CocoaSizeForEnum(i);
}
}
// If we are here, that means sizes[] was an array with only empty values
// or the algorithm above is wrong.
// The former can happen but the later would be wrong.
NS_ASSERTION(sizes[0] == 0 && sizes[1] == 0 && sizes[2] == 0,
"We found no control! We shouldn't be there!");
return CocoaSizeForEnum(regularControlSize);
}
/*
* Draw the given NSCell into the given cgContext with a nice control size.
*
* This function is similar to DrawCellWithScaling, but it decides what
* control size to use based on the destRect's size.
* Scaling is only applied when the difference between the destRect's size
* and the next smaller natural size is greater than snapTolerance. Otherwise
* it snaps to the next smaller control size without scaling because unscaled
* controls look nicer.
*/
static void DrawCellWithSnapping(NSCell *cell,
CGContextRef cgContext,
const HIRect& destRect,
const CellRenderSettings settings,
float verticalAlignFactor,
NSView* view,
BOOL mirrorHorizontal,
float snapTolerance = 2.0f)
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
const float rectWidth = destRect.size.width, rectHeight = destRect.size.height;
const NSSize *sizes = settings.naturalSizes;
const NSSize miniSize = sizes[EnumSizeForCocoaSize(NSMiniControlSize)];
const NSSize smallSize = sizes[EnumSizeForCocoaSize(NSSmallControlSize)];
const NSSize regularSize = sizes[EnumSizeForCocoaSize(NSRegularControlSize)];
HIRect drawRect = destRect;
CGFloat controlWidths[3] = { miniSize.width, smallSize.width, regularSize.width };
NSControlSize controlSizeX = FindControlSize(rectWidth, controlWidths, snapTolerance);
CGFloat controlHeights[3] = { miniSize.height, smallSize.height, regularSize.height };
NSControlSize controlSizeY = FindControlSize(rectHeight, controlHeights, snapTolerance);
NSControlSize controlSize = NSRegularControlSize;
int sizeIndex = 0;
// At some sizes, don't scale but snap.
const NSControlSize smallerControlSize =
EnumSizeForCocoaSize(controlSizeX) < EnumSizeForCocoaSize(controlSizeY) ?
controlSizeX : controlSizeY;
const int smallerControlSizeIndex = EnumSizeForCocoaSize(smallerControlSize);
const NSSize size = sizes[smallerControlSizeIndex];
float diffWidth = size.width ? rectWidth - size.width : 0.0f;
float diffHeight = size.height ? rectHeight - size.height : 0.0f;
if (diffWidth >= 0.0f && diffHeight >= 0.0f &&
diffWidth <= snapTolerance && diffHeight <= snapTolerance) {
// Snap to the smaller control size.
controlSize = smallerControlSize;
sizeIndex = smallerControlSizeIndex;
// Resize and center the drawRect.
if (sizes[sizeIndex].width) {
drawRect.origin.x += ceil((destRect.size.width - sizes[sizeIndex].width) / 2);
drawRect.size.width = sizes[sizeIndex].width;
}
if (sizes[sizeIndex].height) {
drawRect.origin.y += floor((destRect.size.height - sizes[sizeIndex].height) * verticalAlignFactor);
drawRect.size.height = sizes[sizeIndex].height;
}
} else {
// Use the larger control size.
controlSize = EnumSizeForCocoaSize(controlSizeX) > EnumSizeForCocoaSize(controlSizeY) ?
controlSizeX : controlSizeY;
sizeIndex = EnumSizeForCocoaSize(controlSize);
}
[cell setControlSize:controlSize];
NSSize minimumSize = settings.minimumSizes ? settings.minimumSizes[sizeIndex] : NSZeroSize;
DrawCellWithScaling(cell, cgContext, drawRect, controlSize, sizes[sizeIndex],
minimumSize, settings.margins, view, mirrorHorizontal);
NS_OBJC_END_TRY_ABORT_BLOCK;
}
static float VerticalAlignFactor(nsIFrame *aFrame)
{
if (!aFrame)
return 0.5f; // default: center
const nsStyleCoord& va = aFrame->StyleTextReset()->mVerticalAlign;
uint8_t intval = (va.GetUnit() == eStyleUnit_Enumerated)
? va.GetIntValue()
: NS_STYLE_VERTICAL_ALIGN_MIDDLE;
switch (intval) {
case NS_STYLE_VERTICAL_ALIGN_TOP:
case NS_STYLE_VERTICAL_ALIGN_TEXT_TOP:
return 0.0f;
case NS_STYLE_VERTICAL_ALIGN_SUB:
case NS_STYLE_VERTICAL_ALIGN_SUPER:
case NS_STYLE_VERTICAL_ALIGN_MIDDLE:
case NS_STYLE_VERTICAL_ALIGN_MIDDLE_WITH_BASELINE:
return 0.5f;
case NS_STYLE_VERTICAL_ALIGN_BASELINE:
case NS_STYLE_VERTICAL_ALIGN_TEXT_BOTTOM:
case NS_STYLE_VERTICAL_ALIGN_BOTTOM:
return 1.0f;
default:
NS_NOTREACHED("invalid vertical-align");
return 0.5f;
}
}
// These are the sizes that Gecko needs to request to draw if it wants
// to get a standard-sized Aqua radio button drawn. Note that the rects
// that draw these are actually a little bigger.
static const CellRenderSettings radioSettings = {
{
NSMakeSize(11, 11), // mini
NSMakeSize(13, 13), // small
NSMakeSize(16, 16) // regular
},
{
NSZeroSize, NSZeroSize, NSZeroSize
},
{
{ // Leopard
{0, 0, 0, 0}, // mini
{0, 1, 1, 1}, // small
{0, 0, 0, 0} // regular
}
}
};
static const CellRenderSettings checkboxSettings = {
{
NSMakeSize(11, 11), // mini
NSMakeSize(13, 13), // small
NSMakeSize(16, 16) // regular
},
{
NSZeroSize, NSZeroSize, NSZeroSize
},
{
{ // Leopard
{0, 1, 0, 0}, // mini
{0, 1, 0, 1}, // small
{0, 1, 0, 1} // regular
}
}
};
void
nsNativeThemeCocoa::DrawCheckboxOrRadio(CGContextRef cgContext, bool inCheckbox,
const HIRect& inBoxRect, bool inSelected,
nsEventStates inState, nsIFrame* aFrame)
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
NSButtonCell *cell = inCheckbox ? mCheckboxCell : mRadioButtonCell;
NSCellStateValue state = inSelected ? NSOnState : NSOffState;
// Check if we have an indeterminate checkbox
if (inCheckbox && GetIndeterminate(aFrame))
state = NSMixedState;
[cell setEnabled:!IsDisabled(aFrame, inState)];
[cell setShowsFirstResponder:inState.HasState(NS_EVENT_STATE_FOCUS)];
[cell setState:state];
[cell setHighlighted:inState.HasAllStates(NS_EVENT_STATE_ACTIVE | NS_EVENT_STATE_HOVER)];
[cell setControlTint:(FrameIsInActiveWindow(aFrame) ? [NSColor currentControlTint] : NSClearControlTint)];
// Ensure that the control is square.
float length = std::min(inBoxRect.size.width, inBoxRect.size.height);
HIRect drawRect = CGRectMake(inBoxRect.origin.x + (int)((inBoxRect.size.width - length) / 2.0f),
inBoxRect.origin.y + (int)((inBoxRect.size.height - length) / 2.0f),
length, length);
DrawCellWithSnapping(cell, cgContext, drawRect,
inCheckbox ? checkboxSettings : radioSettings,
VerticalAlignFactor(aFrame), mCellDrawView, NO);
NS_OBJC_END_TRY_ABORT_BLOCK;
}
static const CellRenderSettings searchFieldSettings = {
{
NSMakeSize(0, 16), // mini
NSMakeSize(0, 19), // small
NSMakeSize(0, 22) // regular
},
{
NSMakeSize(32, 0), // mini
NSMakeSize(38, 0), // small
NSMakeSize(44, 0) // regular
},
{
{ // Leopard
{0, 0, 0, 0}, // mini
{0, 0, 0, 0}, // small
{0, 0, 0, 0} // regular
}
}
};
void
nsNativeThemeCocoa::DrawSearchField(CGContextRef cgContext, const HIRect& inBoxRect,
nsIFrame* aFrame, nsEventStates inState)
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
ContextAwareSearchFieldCell* cell = mSearchFieldCell;
[cell setContext:aFrame];
[cell setEnabled:!IsDisabled(aFrame, inState)];
// NOTE: this could probably use inState
[cell setShowsFirstResponder:IsFocused(aFrame)];
DrawCellWithSnapping(cell, cgContext, inBoxRect, searchFieldSettings,
VerticalAlignFactor(aFrame), mCellDrawView,
IsFrameRTL(aFrame));
[cell setContext:nullptr];
NS_OBJC_END_TRY_ABORT_BLOCK;
}
static const CellRenderSettings pushButtonSettings = {
{
NSMakeSize(0, 16), // mini
NSMakeSize(0, 19), // small
NSMakeSize(0, 22) // regular
},
{
NSMakeSize(18, 0), // mini
NSMakeSize(26, 0), // small
NSMakeSize(30, 0) // regular
},
{
{ // Leopard
{0, 0, 0, 0}, // mini
{4, 0, 4, 1}, // small
{5, 0, 5, 2} // regular
}
}
};
// The height at which we start doing square buttons instead of rounded buttons
// Rounded buttons look bad if drawn at a height greater than 26, so at that point
// we switch over to doing square buttons which looks fine at any size.
#define DO_SQUARE_BUTTON_HEIGHT 26
void
nsNativeThemeCocoa::DrawPushButton(CGContextRef cgContext, const HIRect& inBoxRect,
nsEventStates inState, nsIFrame* aFrame)
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
BOOL isActive = FrameIsInActiveWindow(aFrame);
BOOL isDisabled = IsDisabled(aFrame, inState);
[mPushButtonCell setEnabled:!isDisabled];
[mPushButtonCell setHighlighted:isActive &&
inState.HasAllStates(NS_EVENT_STATE_ACTIVE | NS_EVENT_STATE_HOVER)];
[mPushButtonCell setShowsFirstResponder:inState.HasState(NS_EVENT_STATE_FOCUS) && !isDisabled && isActive];
// If the button is tall enough, draw the square button style so that buttons with
// non-standard content look good. Otherwise draw normal rounded aqua buttons.
if (inBoxRect.size.height > DO_SQUARE_BUTTON_HEIGHT) {
[mPushButtonCell setBezelStyle:NSShadowlessSquareBezelStyle];
DrawCellWithScaling(mPushButtonCell, cgContext, inBoxRect, NSRegularControlSize,
NSZeroSize, NSMakeSize(14, 0), NULL,
mCellDrawView, IsFrameRTL(aFrame));
} else {
[mPushButtonCell setBezelStyle:NSRoundedBezelStyle];
DrawCellWithSnapping(mPushButtonCell, cgContext, inBoxRect, pushButtonSettings,
0.5f, mCellDrawView, IsFrameRTL(aFrame), 1.0f);
}
#if DRAW_IN_FRAME_DEBUG
CGContextSetRGBFillColor(cgContext, 0.0, 0.0, 0.5, 0.25);
CGContextFillRect(cgContext, inBoxRect);
#endif
NS_OBJC_END_TRY_ABORT_BLOCK;
}
typedef void (*RenderHIThemeControlFunction)(CGContextRef cgContext, const HIRect& aRenderRect, void* aData);
static void
RenderTransformedHIThemeControl(CGContextRef aCGContext, const HIRect& aRect,
RenderHIThemeControlFunction aFunc, void* aData,
BOOL mirrorHorizontally = NO)
{
CGAffineTransform savedCTM = CGContextGetCTM(aCGContext);
CGContextTranslateCTM(aCGContext, aRect.origin.x, aRect.origin.y);
bool drawDirect;
HIRect drawRect = aRect;
drawRect.origin = CGPointZero;
if (!mirrorHorizontally && savedCTM.a == 1.0f && savedCTM.b == 0.0f &&
savedCTM.c == 0.0f && (savedCTM.d == 1.0f || savedCTM.d == -1.0f)) {
drawDirect = TRUE;
} else {
drawDirect = FALSE;
}
// Fall back to no bitmap buffer if the area of our control (in pixels^2)
// is too large.
if (drawDirect || (aRect.size.width * aRect.size.height > BITMAP_MAX_AREA)) {
aFunc(aCGContext, drawRect, aData);
} else {
// Inflate the buffer to capture focus rings.
int w = ceil(drawRect.size.width) + 2 * MAX_FOCUS_RING_WIDTH;
int h = ceil(drawRect.size.height) + 2 * MAX_FOCUS_RING_WIDTH;
int backingScaleFactor = GetBackingScaleFactorForRendering(aCGContext);
CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
CGContextRef bitmapctx = CGBitmapContextCreate(NULL,
w * backingScaleFactor,
h * backingScaleFactor,
8,
w * backingScaleFactor * 4,
colorSpace,
kCGImageAlphaPremultipliedFirst);
CGColorSpaceRelease(colorSpace);
CGContextScaleCTM(bitmapctx, backingScaleFactor, backingScaleFactor);
CGContextTranslateCTM(bitmapctx, MAX_FOCUS_RING_WIDTH, MAX_FOCUS_RING_WIDTH);
// HITheme always wants to draw into a flipped context, or things
// get confused.
CGContextTranslateCTM(bitmapctx, 0.0f, aRect.size.height);
CGContextScaleCTM(bitmapctx, 1.0f, -1.0f);
aFunc(bitmapctx, drawRect, aData);
CGImageRef bitmap = CGBitmapContextCreateImage(bitmapctx);
CGAffineTransform ctm = CGContextGetCTM(aCGContext);
// We need to unflip, so that we can do a DrawImage without getting a flipped image.
CGContextTranslateCTM(aCGContext, 0.0f, aRect.size.height);
CGContextScaleCTM(aCGContext, 1.0f, -1.0f);
if (mirrorHorizontally) {
CGContextTranslateCTM(aCGContext, aRect.size.width, 0);
CGContextScaleCTM(aCGContext, -1.0f, 1.0f);
}
HIRect inflatedDrawRect = CGRectMake(-MAX_FOCUS_RING_WIDTH, -MAX_FOCUS_RING_WIDTH, w, h);
CGContextDrawImage(aCGContext, inflatedDrawRect, bitmap);
CGContextSetCTM(aCGContext, ctm);
CGImageRelease(bitmap);
CGContextRelease(bitmapctx);
}
CGContextSetCTM(aCGContext, savedCTM);
}
static void
RenderButton(CGContextRef cgContext, const HIRect& aRenderRect, void* aData)
{
HIThemeButtonDrawInfo* bdi = (HIThemeButtonDrawInfo*)aData;
HIThemeDrawButton(&aRenderRect, bdi, cgContext, kHIThemeOrientationNormal, NULL);
}
void
nsNativeThemeCocoa::DrawButton(CGContextRef cgContext, ThemeButtonKind inKind,
const HIRect& inBoxRect, bool inIsDefault,
ThemeButtonValue inValue, ThemeButtonAdornment inAdornment,
nsEventStates inState, nsIFrame* aFrame)
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
BOOL isActive = FrameIsInActiveWindow(aFrame);
BOOL isDisabled = IsDisabled(aFrame, inState);
HIThemeButtonDrawInfo bdi;
bdi.version = 0;
bdi.kind = inKind;
bdi.value = inValue;
bdi.adornment = inAdornment;
if (isDisabled) {
bdi.state = kThemeStateUnavailable;
}
else if (inState.HasAllStates(NS_EVENT_STATE_ACTIVE | NS_EVENT_STATE_HOVER)) {
bdi.state = kThemeStatePressed;
}
else {
if (inKind == kThemeArrowButton)
bdi.state = kThemeStateUnavailable; // these are always drawn as unavailable
else if (!isActive && inKind == kThemeListHeaderButton)
bdi.state = kThemeStateInactive;
else
bdi.state = kThemeStateActive;
}
if (inState.HasState(NS_EVENT_STATE_FOCUS) && isActive)
bdi.adornment |= kThemeAdornmentFocus;
if (inIsDefault && !isDisabled && isActive &&
!inState.HasState(NS_EVENT_STATE_ACTIVE)) {
bdi.adornment |= kThemeAdornmentDefault;
bdi.animation.time.start = 0;
bdi.animation.time.current = CFAbsoluteTimeGetCurrent();
}
HIRect drawFrame = inBoxRect;
if (inKind == kThemePushButton) {
drawFrame.size.height -= 2;
if (inBoxRect.size.height < pushButtonSettings.naturalSizes[smallControlSize].height) {
bdi.kind = kThemePushButtonMini;
}
else if (inBoxRect.size.height < pushButtonSettings.naturalSizes[regularControlSize].height) {
bdi.kind = kThemePushButtonSmall;
drawFrame.origin.y -= 1;
drawFrame.origin.x += 1;
drawFrame.size.width -= 2;
}
}
else if (inKind == kThemeListHeaderButton) {
CGContextClipToRect(cgContext, inBoxRect);
// Always remove the top border.
drawFrame.origin.y -= 1;
drawFrame.size.height += 1;
// Remove the left border in LTR mode and the right border in RTL mode.
drawFrame.size.width += 1;
bool isLast = IsLastTreeHeaderCell(aFrame);
if (isLast)
drawFrame.size.width += 1; // Also remove the other border.
if (!IsFrameRTL(aFrame) || isLast)
drawFrame.origin.x -= 1;
}
RenderTransformedHIThemeControl(cgContext, drawFrame, RenderButton, &bdi,
IsFrameRTL(aFrame));
#if DRAW_IN_FRAME_DEBUG
CGContextSetRGBFillColor(cgContext, 0.0, 0.0, 0.5, 0.25);
CGContextFillRect(cgContext, inBoxRect);
#endif
NS_OBJC_END_TRY_ABORT_BLOCK;
}
static const CellRenderSettings dropdownSettings = {
{
NSMakeSize(0, 16), // mini
NSMakeSize(0, 19), // small
NSMakeSize(0, 22) // regular
},
{
NSMakeSize(18, 0), // mini
NSMakeSize(38, 0), // small
NSMakeSize(44, 0) // regular
},
{
{ // Leopard
{1, 1, 2, 1}, // mini
{3, 0, 3, 1}, // small
{3, 0, 3, 0} // regular
}
}
};
static const CellRenderSettings editableMenulistSettings = {
{
NSMakeSize(0, 15), // mini
NSMakeSize(0, 18), // small
NSMakeSize(0, 21) // regular
},
{
NSMakeSize(18, 0), // mini
NSMakeSize(38, 0), // small
NSMakeSize(44, 0) // regular
},
{
{ // Leopard
{0, 0, 2, 2}, // mini
{0, 0, 3, 2}, // small
{0, 1, 3, 3} // regular
}
}
};
void
nsNativeThemeCocoa::DrawDropdown(CGContextRef cgContext, const HIRect& inBoxRect,
nsEventStates inState, uint8_t aWidgetType,
nsIFrame* aFrame)
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
[mDropdownCell setPullsDown:(aWidgetType == NS_THEME_BUTTON)];
BOOL isEditable = (aWidgetType == NS_THEME_DROPDOWN_TEXTFIELD);
NSCell* cell = isEditable ? (NSCell*)mComboBoxCell : (NSCell*)mDropdownCell;
[cell setEnabled:!IsDisabled(aFrame, inState)];
[cell setShowsFirstResponder:(IsFocused(aFrame) || inState.HasState(NS_EVENT_STATE_FOCUS))];
[cell setHighlighted:IsOpenButton(aFrame)];
[cell setControlTint:(FrameIsInActiveWindow(aFrame) ? [NSColor currentControlTint] : NSClearControlTint)];
const CellRenderSettings& settings = isEditable ? editableMenulistSettings : dropdownSettings;
DrawCellWithSnapping(cell, cgContext, inBoxRect, settings,
0.5f, mCellDrawView, IsFrameRTL(aFrame));
NS_OBJC_END_TRY_ABORT_BLOCK;
}
void
nsNativeThemeCocoa::DrawSpinButtons(CGContextRef cgContext, ThemeButtonKind inKind,
const HIRect& inBoxRect, ThemeDrawState inDrawState,
ThemeButtonAdornment inAdornment,
nsEventStates inState, nsIFrame* aFrame)
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
HIThemeButtonDrawInfo bdi;
bdi.version = 0;
bdi.kind = inKind;
bdi.value = kThemeButtonOff;
bdi.adornment = inAdornment;
if (IsDisabled(aFrame, inState))
bdi.state = kThemeStateUnavailable;
else
bdi.state = FrameIsInActiveWindow(aFrame) ? inDrawState : kThemeStateActive;
HIThemeDrawButton(&inBoxRect, &bdi, cgContext, HITHEME_ORIENTATION, NULL);
NS_OBJC_END_TRY_ABORT_BLOCK;
}
void
nsNativeThemeCocoa::DrawFrame(CGContextRef cgContext, HIThemeFrameKind inKind,
const HIRect& inBoxRect, bool inDisabled,
nsEventStates inState)
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
HIThemeFrameDrawInfo fdi;
fdi.version = 0;
fdi.kind = inKind;
// We don't ever set an inactive state for this because it doesn't
// look right (see other apps).
fdi.state = inDisabled ? kThemeStateUnavailable : kThemeStateActive;
// for some reason focus rings on listboxes draw incorrectly
if (inKind == kHIThemeFrameListBox)
fdi.isFocused = 0;
else
fdi.isFocused = inState.HasState(NS_EVENT_STATE_FOCUS);
// HIThemeDrawFrame takes the rect for the content area of the frame, not
// the bounding rect for the frame. Here we reduce the size of the rect we
// will pass to make it the size of the content.
HIRect drawRect = inBoxRect;
if (inKind == kHIThemeFrameTextFieldSquare) {
SInt32 frameOutset = 0;
::GetThemeMetric(kThemeMetricEditTextFrameOutset, &frameOutset);
drawRect.origin.x += frameOutset;
drawRect.origin.y += frameOutset;
drawRect.size.width -= frameOutset * 2;
drawRect.size.height -= frameOutset * 2;
}
else if (inKind == kHIThemeFrameListBox) {
SInt32 frameOutset = 0;
::GetThemeMetric(kThemeMetricListBoxFrameOutset, &frameOutset);
drawRect.origin.x += frameOutset;
drawRect.origin.y += frameOutset;
drawRect.size.width -= frameOutset * 2;
drawRect.size.height -= frameOutset * 2;
}
#if DRAW_IN_FRAME_DEBUG
CGContextSetRGBFillColor(cgContext, 0.0, 0.0, 0.5, 0.25);
CGContextFillRect(cgContext, inBoxRect);
#endif
HIThemeDrawFrame(&drawRect, &fdi, cgContext, HITHEME_ORIENTATION);
NS_OBJC_END_TRY_ABORT_BLOCK;
}
static const CellRenderSettings progressSettings[2][2] = {
// Vertical progress bar.
{
// Determined settings.
{
{
NSZeroSize, // mini
NSMakeSize(10, 0), // small
NSMakeSize(16, 0) // regular
},
{
NSZeroSize, NSZeroSize, NSZeroSize
},
{
{ // Leopard
{0, 0, 0, 0}, // mini
{1, 1, 1, 1}, // small
{1, 1, 1, 1} // regular
}
}
},
// There is no horizontal margin in regular undetermined size.
{
{
NSZeroSize, // mini
NSMakeSize(10, 0), // small
NSMakeSize(16, 0) // regular
},
{
NSZeroSize, NSZeroSize, NSZeroSize
},
{
{ // Leopard
{0, 0, 0, 0}, // mini
{1, 1, 1, 1}, // small
{1, 0, 1, 0} // regular
}
}
}
},
// Horizontal progress bar.
{
// Determined settings.
{
{
NSZeroSize, // mini
NSMakeSize(0, 10), // small
NSMakeSize(0, 16) // regular
},
{
NSZeroSize, NSZeroSize, NSZeroSize
},
{
{ // Leopard
{0, 0, 0, 0}, // mini
{1, 1, 1, 1}, // small
{1, 1, 1, 1} // regular
}
}
},
// There is no horizontal margin in regular undetermined size.
{
{
NSZeroSize, // mini
NSMakeSize(0, 10), // small
NSMakeSize(0, 16) // regular
},
{
NSZeroSize, NSZeroSize, NSZeroSize
},
{
{ // Leopard
{0, 0, 0, 0}, // mini
{1, 1, 1, 1}, // small
{0, 1, 0, 1} // regular
}
}
}
}
};
void
nsNativeThemeCocoa::DrawProgress(CGContextRef cgContext, const HIRect& inBoxRect,
bool inIsIndeterminate, bool inIsHorizontal,
double inValue, double inMaxValue,
nsIFrame* aFrame)
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
NSProgressBarCell* cell = mProgressBarCell;
[cell setValue:inValue];
[cell setMax:inMaxValue];
[cell setIndeterminate:inIsIndeterminate];
[cell setHorizontal:inIsHorizontal];
[cell setControlTint:(FrameIsInActiveWindow(aFrame) ? [NSColor currentControlTint]
: NSClearControlTint)];
DrawCellWithSnapping(cell, cgContext, inBoxRect,
progressSettings[inIsHorizontal][inIsIndeterminate],
VerticalAlignFactor(aFrame), mCellDrawView,
IsFrameRTL(aFrame));
NS_OBJC_END_TRY_ABORT_BLOCK;
}
static const CellRenderSettings meterSetting = {
{
NSMakeSize(0, 16), // mini
NSMakeSize(0, 16), // small
NSMakeSize(0, 16) // regular
},
{
NSZeroSize, NSZeroSize, NSZeroSize
},
{
{ // Leopard
{1, 1, 1, 1}, // mini
{1, 1, 1, 1}, // small
{1, 1, 1, 1} // regular
}
}
};
void
nsNativeThemeCocoa::DrawMeter(CGContextRef cgContext, const HIRect& inBoxRect,
nsIFrame* aFrame)
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK
NS_PRECONDITION(aFrame, "aFrame should not be null here!");
nsCOMPtr<nsIDOMHTMLMeterElement> meterElement =
do_QueryInterface(aFrame->GetContent());
// When using -moz-meterbar on an non meter element, we will not be able to
// get all the needed information so we just draw an empty meter.
if (!meterElement) {
DrawCellWithSnapping(mMeterBarCell, cgContext, inBoxRect,
meterSetting, VerticalAlignFactor(aFrame),
mCellDrawView, IsFrameRTL(aFrame));
return;
}
double value;
double min;
double max;
double low;
double high;
double optimum;
// NOTE: if we were allowed to static_cast to HTMLMeterElement we would be
// able to use nicer getters...
meterElement->GetValue(&value);
meterElement->GetMin(&min);
meterElement->GetMax(&max);
meterElement->GetLow(&low);
meterElement->GetHigh(&high);
meterElement->GetOptimum(&optimum);
NSLevelIndicatorCell* cell = mMeterBarCell;
[cell setMinValue:min];
[cell setMaxValue:max];
[cell setDoubleValue:value];
/**
* The way HTML and Cocoa defines the meter/indicator widget are different.
* So, we are going to use a trick to get the Cocoa widget showing what we
* are expecting: we set the warningValue or criticalValue to the current
* value when we want to have the widget to be in the warning or critical
* state.
*/
nsEventStates states = aFrame->GetContent()->AsElement()->State();
// Reset previously set warning and critical values.
[cell setWarningValue:max+1];
[cell setCriticalValue:max+1];
if (states.HasState(NS_EVENT_STATE_SUB_OPTIMUM)) {
[cell setWarningValue:value];
} else if (states.HasState(NS_EVENT_STATE_SUB_SUB_OPTIMUM)) {
[cell setCriticalValue:value];
}
HIRect rect = CGRectStandardize(inBoxRect);
BOOL vertical = IsVerticalMeter(aFrame);
CGContextSaveGState(cgContext);
if (vertical) {
/**
* Cocoa doesn't provide a vertical meter bar so to show one, we have to
* show a rotated horizontal meter bar.
* Given that we want to show a vertical meter bar, we assume that the rect
* has vertical dimensions but we can't correctly draw a meter widget inside
* such a rectangle so we need to inverse width and height (and re-position)
* to get a rectangle with horizontal dimensions.
* Finally, we want to show a vertical meter so we want to rotate the result
* so it is vertical. We do that by changing the context.
*/
CGFloat tmp = rect.size.width;
rect.size.width = rect.size.height;
rect.size.height = tmp;
rect.origin.x += rect.size.height / 2.f - rect.size.width / 2.f;
rect.origin.y += rect.size.width / 2.f - rect.size.height / 2.f;
CGContextTranslateCTM(cgContext, CGRectGetMidX(rect), CGRectGetMidY(rect));
CGContextRotateCTM(cgContext, -M_PI / 2.f);
CGContextTranslateCTM(cgContext, -CGRectGetMidX(rect), -CGRectGetMidY(rect));
}
DrawCellWithSnapping(cell, cgContext, rect,
meterSetting, VerticalAlignFactor(aFrame),
mCellDrawView, !vertical && IsFrameRTL(aFrame));
CGContextRestoreGState(cgContext);
NS_OBJC_END_TRY_ABORT_BLOCK
}
void
nsNativeThemeCocoa::DrawTabPanel(CGContextRef cgContext, const HIRect& inBoxRect,
nsIFrame* aFrame)
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
HIThemeTabPaneDrawInfo tpdi;
tpdi.version = 1;
tpdi.state = FrameIsInActiveWindow(aFrame) ? kThemeStateActive : kThemeStateInactive;
tpdi.direction = kThemeTabNorth;
tpdi.size = kHIThemeTabSizeNormal;
tpdi.kind = kHIThemeTabKindNormal;
HIThemeDrawTabPane(&inBoxRect, &tpdi, cgContext, HITHEME_ORIENTATION);
NS_OBJC_END_TRY_ABORT_BLOCK;
}
void
nsNativeThemeCocoa::DrawScale(CGContextRef cgContext, const HIRect& inBoxRect,
nsEventStates inState, bool inIsVertical,
bool inIsReverse, int32_t inCurrentValue,
int32_t inMinValue, int32_t inMaxValue,
nsIFrame* aFrame)
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
HIThemeTrackDrawInfo tdi;
tdi.version = 0;
tdi.kind = kThemeMediumSlider;
tdi.bounds = inBoxRect;
tdi.min = inMinValue;
tdi.max = inMaxValue;
tdi.value = inCurrentValue;
tdi.attributes = kThemeTrackShowThumb;
if (!inIsVertical)
tdi.attributes |= kThemeTrackHorizontal;
if (inIsReverse)
tdi.attributes |= kThemeTrackRightToLeft;
if (inState.HasState(NS_EVENT_STATE_FOCUS))
tdi.attributes |= kThemeTrackHasFocus;
if (IsDisabled(aFrame, inState))
tdi.enableState = kThemeTrackDisabled;
else
tdi.enableState = FrameIsInActiveWindow(aFrame) ? kThemeTrackActive : kThemeTrackInactive;
tdi.trackInfo.slider.thumbDir = kThemeThumbPlain;
tdi.trackInfo.slider.pressState = 0;
HIThemeDrawTrack(&tdi, NULL, cgContext, HITHEME_ORIENTATION);
NS_OBJC_END_TRY_ABORT_BLOCK;
}
nsIFrame*
nsNativeThemeCocoa::SeparatorResponsibility(nsIFrame* aBefore, nsIFrame* aAfter)
{
// Usually a separator is drawn by the segment to the right of the
// separator, but pressed and selected segments have higher priority.
if (!aBefore || !aAfter)
return nullptr;
if (IsSelectedButton(aAfter))
return aAfter;
if (IsSelectedButton(aBefore) || IsPressedButton(aBefore))
return aBefore;
return aAfter;
}
CGRect
nsNativeThemeCocoa::SeparatorAdjustedRect(CGRect aRect, nsIFrame* aLeft,
nsIFrame* aCurrent, nsIFrame* aRight)
{
// A separator between two segments should always be located in the leftmost
// pixel column of the segment to the right of the separator, regardless of
// who ends up drawing it.
// CoreUI draws the separators inside the drawing rect.
if (aLeft && SeparatorResponsibility(aLeft, aCurrent) == aLeft) {
// The left button draws the separator, so we need to make room for it.
aRect.origin.x += 1;
aRect.size.width -= 1;
}
if (SeparatorResponsibility(aCurrent, aRight) == aCurrent) {
// We draw the right separator, so we need to extend the draw rect into the
// segment to our right.
aRect.size.width += 1;
}
return aRect;
}
static NSString* ToolbarButtonPosition(BOOL aIsFirst, BOOL aIsLast)
{
if (aIsFirst) {
if (aIsLast)
return @"kCUISegmentPositionOnly";
return @"kCUISegmentPositionFirst";
}
if (aIsLast)
return @"kCUISegmentPositionLast";
return @"kCUISegmentPositionMiddle";
}
struct SegmentedControlRenderSettings {
const CGFloat* heights;
const NSString* widgetName;
const BOOL ignoresPressedWhenSelected;
const BOOL isToolbarControl;
};
static const CGFloat tabHeights[3] = { 17, 20, 23 };
static const SegmentedControlRenderSettings tabRenderSettings = {
tabHeights, @"tab", YES, NO
};
static const CGFloat toolbarButtonHeights[3] = { 15, 18, 22 };
static const SegmentedControlRenderSettings toolbarButtonRenderSettings = {
toolbarButtonHeights, @"kCUIWidgetButtonSegmentedSCurve", NO, YES
};
void
nsNativeThemeCocoa::DrawSegment(CGContextRef cgContext, const HIRect& inBoxRect,
nsEventStates inState, nsIFrame* aFrame,
const SegmentedControlRenderSettings& aSettings)
{
BOOL isActive = IsActive(aFrame, aSettings.isToolbarControl);
BOOL isFocused = inState.HasState(NS_EVENT_STATE_FOCUS);
BOOL isSelected = IsSelectedButton(aFrame);
BOOL isPressed = IsPressedButton(aFrame);
if (isSelected && aSettings.ignoresPressedWhenSelected) {
isPressed = NO;
}
BOOL isRTL = IsFrameRTL(aFrame);
nsIFrame* left = GetAdjacentSiblingFrameWithSameAppearance(aFrame, isRTL);
nsIFrame* right = GetAdjacentSiblingFrameWithSameAppearance(aFrame, !isRTL);
CGRect drawRect = SeparatorAdjustedRect(inBoxRect, left, aFrame, right);
if (drawRect.size.width * drawRect.size.height > CUIDRAW_MAX_AREA) {
return;
}
BOOL drawLeftSeparator = SeparatorResponsibility(left, aFrame) == aFrame;
BOOL drawRightSeparator = SeparatorResponsibility(aFrame, right) == aFrame;
NSControlSize controlSize = FindControlSize(drawRect.size.height, aSettings.heights, 4.0f);
CUIDraw([NSWindow coreUIRenderer], drawRect, cgContext,
(CFDictionaryRef)[NSDictionary dictionaryWithObjectsAndKeys:
aSettings.widgetName, @"widget",
ToolbarButtonPosition(!left, !right), @"kCUIPositionKey",
[NSNumber numberWithBool:drawLeftSeparator], @"kCUISegmentLeadingSeparatorKey",
[NSNumber numberWithBool:drawRightSeparator], @"kCUISegmentTrailingSeparatorKey",
[NSNumber numberWithBool:isSelected], @"value",
(isPressed ? @"pressed" : (isActive ? @"normal" : @"inactive")), @"state",
[NSNumber numberWithBool:isFocused], @"focus",
CUIControlSizeForCocoaSize(controlSize), @"size",
[NSNumber numberWithBool:YES], @"is.flipped",
@"up", @"direction",
nil],
nil);
}
static inline UInt8
ConvertToPressState(nsEventStates aButtonState, UInt8 aPressState)
{
// If the button is pressed, return the press state passed in. Otherwise, return 0.
return aButtonState.HasAllStates(NS_EVENT_STATE_ACTIVE | NS_EVENT_STATE_HOVER) ? aPressState : 0;
}
void
nsNativeThemeCocoa::GetScrollbarPressStates(nsIFrame *aFrame, nsEventStates aButtonStates[])
{
static nsIContent::AttrValuesArray attributeValues[] = {
&nsGkAtoms::scrollbarUpTop,
&nsGkAtoms::scrollbarDownTop,
&nsGkAtoms::scrollbarUpBottom,
&nsGkAtoms::scrollbarDownBottom,
nullptr
};
// Get the state of any scrollbar buttons in our child frames
for (nsIFrame *childFrame = aFrame->GetFirstPrincipalChild();
childFrame;
childFrame = childFrame->GetNextSibling()) {
nsIContent *childContent = childFrame->GetContent();
if (!childContent) continue;
int32_t attrIndex = childContent->FindAttrValueIn(kNameSpaceID_None, nsGkAtoms::sbattr,
attributeValues, eCaseMatters);
if (attrIndex < 0) continue;
aButtonStates[attrIndex] = GetContentState(childFrame, NS_THEME_BUTTON);
}
}
// Both of the following sets of numbers were derived by loading the testcase in
// bmo bug 380185 in Safari and observing its behavior for various heights of scrollbar.
// These magic numbers are the minimum sizes we can draw a scrollbar and still
// have room for everything to display, including the thumb
#define MIN_SCROLLBAR_SIZE_WITH_THUMB 61
#define MIN_SMALL_SCROLLBAR_SIZE_WITH_THUMB 49
// And these are the minimum sizes if we don't draw the thumb
#define MIN_SCROLLBAR_SIZE 56
#define MIN_SMALL_SCROLLBAR_SIZE 46
void
nsNativeThemeCocoa::GetScrollbarDrawInfo(HIThemeTrackDrawInfo& aTdi, nsIFrame *aFrame,
const CGSize& aSize, bool aShouldGetButtonStates)
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
int32_t curpos = CheckIntAttr(aFrame, nsGkAtoms::curpos, 0);
int32_t minpos = CheckIntAttr(aFrame, nsGkAtoms::minpos, 0);
int32_t maxpos = CheckIntAttr(aFrame, nsGkAtoms::maxpos, 100);
int32_t thumbSize = CheckIntAttr(aFrame, nsGkAtoms::pageincrement, 10);
bool isHorizontal = aFrame->GetContent()->AttrValueIs(kNameSpaceID_None, nsGkAtoms::orient,
nsGkAtoms::horizontal, eCaseMatters);
bool isSmall = aFrame->StyleDisplay()->mAppearance == NS_THEME_SCROLLBAR_SMALL;
aTdi.version = 0;
aTdi.kind = isSmall ? kThemeSmallScrollBar : kThemeMediumScrollBar;
aTdi.bounds.origin = CGPointZero;
aTdi.bounds.size = aSize;
aTdi.min = minpos;
aTdi.max = maxpos;
aTdi.value = curpos;
aTdi.attributes = 0;
aTdi.enableState = kThemeTrackActive;
if (isHorizontal)
aTdi.attributes |= kThemeTrackHorizontal;
aTdi.trackInfo.scrollbar.viewsize = (SInt32)thumbSize;
// This should be done early on so things like "kThemeTrackNothingToScroll" can
// override the active enable state.
aTdi.enableState = FrameIsInActiveWindow(aFrame) ? kThemeTrackActive : kThemeTrackInactive;
/* Only display features if we have enough room for them.
* Gecko still maintains the scrollbar info; this is just a visual issue (bug 380185).
*/
int32_t longSideLength = (int32_t)(isHorizontal ? (aSize.width) : (aSize.height));
if (longSideLength >= (isSmall ? MIN_SMALL_SCROLLBAR_SIZE_WITH_THUMB : MIN_SCROLLBAR_SIZE_WITH_THUMB)) {
aTdi.attributes |= kThemeTrackShowThumb;
}
else if (longSideLength < (isSmall ? MIN_SMALL_SCROLLBAR_SIZE : MIN_SCROLLBAR_SIZE)) {
aTdi.enableState = kThemeTrackNothingToScroll;
return;
}
aTdi.trackInfo.scrollbar.pressState = 0;
// Only go get these scrollbar button states if we need it. For example,
// there's no reason to look up scrollbar button states when we're only
// creating a TrackDrawInfo to determine the size of the thumb. There's
// also no reason to do this on Lion or later, whose scrollbars have no
// arrow buttons.
if (aShouldGetButtonStates && !nsCocoaFeatures::OnLionOrLater()) {
nsEventStates buttonStates[4];
GetScrollbarPressStates(aFrame, buttonStates);
NSString *buttonPlacement = [[NSUserDefaults standardUserDefaults] objectForKey:@"AppleScrollBarVariant"];
// It seems that unless all four buttons are showing, kThemeTopOutsideArrowPressed is the correct constant for
// the up scrollbar button.
if ([buttonPlacement isEqualToString:@"DoubleBoth"]) {
aTdi.trackInfo.scrollbar.pressState = ConvertToPressState(buttonStates[0], kThemeTopOutsideArrowPressed) |
ConvertToPressState(buttonStates[1], kThemeTopInsideArrowPressed) |
ConvertToPressState(buttonStates[2], kThemeBottomInsideArrowPressed) |
ConvertToPressState(buttonStates[3], kThemeBottomOutsideArrowPressed);
} else {
aTdi.trackInfo.scrollbar.pressState = ConvertToPressState(buttonStates[0], kThemeTopOutsideArrowPressed) |
ConvertToPressState(buttonStates[1], kThemeBottomOutsideArrowPressed) |
ConvertToPressState(buttonStates[2], kThemeTopOutsideArrowPressed) |
ConvertToPressState(buttonStates[3], kThemeBottomOutsideArrowPressed);
}
}
NS_OBJC_END_TRY_ABORT_BLOCK;
}
static void
RenderScrollbar(CGContextRef cgContext, const HIRect& aRenderRect, void* aData)
{
HIThemeTrackDrawInfo* tdi = (HIThemeTrackDrawInfo*)aData;
HIThemeDrawTrack(tdi, NULL, cgContext, HITHEME_ORIENTATION);
}
void
nsNativeThemeCocoa::DrawScrollbar(CGContextRef aCGContext, const HIRect& aBoxRect, nsIFrame *aFrame)
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
HIThemeTrackDrawInfo tdi;
GetScrollbarDrawInfo(tdi, aFrame, aBoxRect.size, true); // True means we want the press states
RenderTransformedHIThemeControl(aCGContext, aBoxRect, RenderScrollbar, &tdi);
NS_OBJC_END_TRY_ABORT_BLOCK;
}
nsIFrame*
nsNativeThemeCocoa::GetParentScrollbarFrame(nsIFrame *aFrame)
{
// Walk our parents to find a scrollbar frame
nsIFrame *scrollbarFrame = aFrame;
do {
if (scrollbarFrame->GetType() == nsGkAtoms::scrollbarFrame) break;
} while ((scrollbarFrame = scrollbarFrame->GetParent()));
// We return null if we can't find a parent scrollbar frame
return scrollbarFrame;
}
static bool
ToolbarCanBeUnified(CGContextRef cgContext, const HIRect& inBoxRect, NSWindow* aWindow)
{
if (![aWindow isKindOfClass:[ToolbarWindow class]])
return false;
ToolbarWindow* win = (ToolbarWindow*)aWindow;
float unifiedToolbarHeight = [win unifiedToolbarHeight];
return inBoxRect.origin.x == 0 &&
inBoxRect.size.width >= [win frame].size.width &&
CGRectGetMaxY(inBoxRect) <= unifiedToolbarHeight;
}
// By default, kCUIWidgetWindowFrame drawing draws rounded corners in the
// upper corners. Depending on the context type, it fills the background in
// the corners with black or leaves it transparent. Unfortunately, this corner
// rounding interacts poorly with the window corner masking we apply during
// titlebar drawing and results in small remnants of the corner background
// appearing at the rounded edge.
// So we draw square corners.
static void
DrawNativeTitlebarToolbarWithSquareCorners(CGContextRef aContext, const CGRect& aRect,
CGFloat aUnifiedHeight, BOOL aIsMain)
{
// We extend the draw rect horizontally and clip away the rounded corners.
const CGFloat extendHorizontal = 10;
CGRect drawRect = CGRectInset(aRect, -extendHorizontal, 0);
if (drawRect.size.width * drawRect.size.height <= CUIDRAW_MAX_AREA) {
CGContextSaveGState(aContext);
CGContextClipToRect(aContext, aRect);
CUIDraw([NSWindow coreUIRenderer], drawRect, aContext,
(CFDictionaryRef)[NSDictionary dictionaryWithObjectsAndKeys:
@"kCUIWidgetWindowFrame", @"widget",
@"regularwin", @"windowtype",
(aIsMain ? @"normal" : @"inactive"), @"state",
[NSNumber numberWithDouble:aUnifiedHeight], @"kCUIWindowFrameUnifiedTitleBarHeightKey",
[NSNumber numberWithBool:YES], @"kCUIWindowFrameDrawTitleSeparatorKey",
[NSNumber numberWithBool:YES], @"is.flipped",
nil],
nil);
CGContextRestoreGState(aContext);
}
}
void
nsNativeThemeCocoa::DrawUnifiedToolbar(CGContextRef cgContext, const HIRect& inBoxRect,
NSWindow* aWindow)
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
CGContextSaveGState(cgContext);
CGContextClipToRect(cgContext, inBoxRect);
CGFloat unifiedHeight = std::max([(ToolbarWindow*)aWindow unifiedToolbarHeight],
inBoxRect.size.height);
BOOL isMain = [aWindow isMainWindow];
CGFloat titlebarHeight = unifiedHeight - inBoxRect.size.height;
CGRect drawRect = CGRectMake(inBoxRect.origin.x, inBoxRect.origin.y - titlebarHeight,
inBoxRect.size.width, inBoxRect.size.height + titlebarHeight);
DrawNativeTitlebarToolbarWithSquareCorners(cgContext, drawRect, unifiedHeight, isMain);
CGContextRestoreGState(cgContext);
NS_OBJC_END_TRY_ABORT_BLOCK;
}
void
nsNativeThemeCocoa::DrawStatusBar(CGContextRef cgContext, const HIRect& inBoxRect,
nsIFrame *aFrame)
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
if (inBoxRect.size.height < 2.0f)
return;
CGContextSaveGState(cgContext);
CGContextClipToRect(cgContext, inBoxRect);
// kCUIWidgetWindowFrame draws a complete window frame with both title bar
// and bottom bar. We only want the bottom bar, so we extend the draw rect
// upwards to make space for the title bar, and then we clip it away.
CGRect drawRect = inBoxRect;
const int extendUpwards = 40;
drawRect.origin.y -= extendUpwards;
drawRect.size.height += extendUpwards;
if (drawRect.size.width * drawRect.size.height <= CUIDRAW_MAX_AREA) {
CUIDraw([NSWindow coreUIRenderer], drawRect, cgContext,
(CFDictionaryRef)[NSDictionary dictionaryWithObjectsAndKeys:
@"kCUIWidgetWindowFrame", @"widget",
@"regularwin", @"windowtype",
(IsActive(aFrame, YES) ? @"normal" : @"inactive"), @"state",
[NSNumber numberWithInt:inBoxRect.size.height], @"kCUIWindowFrameBottomBarHeightKey",
[NSNumber numberWithBool:YES], @"kCUIWindowFrameDrawBottomBarSeparatorKey",
[NSNumber numberWithBool:YES], @"is.flipped",
nil],
nil);
}
CGContextRestoreGState(cgContext);
NS_OBJC_END_TRY_ABORT_BLOCK;
}
void
nsNativeThemeCocoa::DrawNativeTitlebar(CGContextRef aContext, CGRect aTitlebarRect,
CGFloat aUnifiedHeight, BOOL aIsMain)
{
CGFloat unifiedHeight = std::max(aUnifiedHeight, aTitlebarRect.size.height);
DrawNativeTitlebarToolbarWithSquareCorners(aContext, aTitlebarRect, unifiedHeight, aIsMain);
}
static void
RenderResizer(CGContextRef cgContext, const HIRect& aRenderRect, void* aData)
{
HIThemeGrowBoxDrawInfo* drawInfo = (HIThemeGrowBoxDrawInfo*)aData;
HIThemeDrawGrowBox(&CGPointZero, drawInfo, cgContext, kHIThemeOrientationNormal);
}
void
nsNativeThemeCocoa::DrawResizer(CGContextRef cgContext, const HIRect& aRect,
nsIFrame *aFrame)
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
HIThemeGrowBoxDrawInfo drawInfo;
drawInfo.version = 0;
drawInfo.state = kThemeStateActive;
drawInfo.kind = kHIThemeGrowBoxKindNormal;
drawInfo.direction = kThemeGrowRight | kThemeGrowDown;
drawInfo.size = kHIThemeGrowBoxSizeNormal;
RenderTransformedHIThemeControl(cgContext, aRect, RenderResizer, &drawInfo,
IsFrameRTL(aFrame));
NS_OBJC_END_TRY_ABORT_BLOCK;
}
static bool
IsHiDPIContext(nsDeviceContext* aContext)
{
return nsPresContext::AppUnitsPerCSSPixel() >=
2 * aContext->UnscaledAppUnitsPerDevPixel();
}
NS_IMETHODIMP
nsNativeThemeCocoa::DrawWidgetBackground(nsRenderingContext* aContext,
nsIFrame* aFrame,
uint8_t aWidgetType,
const nsRect& aRect,
const nsRect& aDirtyRect)
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;
// setup to draw into the correct port
int32_t p2a = aContext->AppUnitsPerDevPixel();
gfxRect nativeDirtyRect(aDirtyRect.x, aDirtyRect.y,
aDirtyRect.width, aDirtyRect.height);
gfxRect nativeWidgetRect(aRect.x, aRect.y, aRect.width, aRect.height);
nativeWidgetRect.ScaleInverse(gfxFloat(p2a));
nativeDirtyRect.ScaleInverse(gfxFloat(p2a));
nativeWidgetRect.Round();
if (nativeWidgetRect.IsEmpty())
return NS_OK; // Don't attempt to draw invisible widgets.
gfxContext* thebesCtx = aContext->ThebesContext();
if (!thebesCtx)
return NS_ERROR_FAILURE;
gfxContextMatrixAutoSaveRestore save(thebesCtx);
bool hidpi = IsHiDPIContext(aContext->DeviceContext());
if (hidpi) {
// Use high-resolution drawing.
nativeWidgetRect.ScaleInverse(2.0f);
nativeDirtyRect.ScaleInverse(2.0f);
thebesCtx->Scale(2.0f, 2.0f);
}
gfxQuartzNativeDrawing nativeDrawing(thebesCtx, nativeDirtyRect,
hidpi ? 2.0f : 1.0f);
CGContextRef cgContext = nativeDrawing.BeginNativeDrawing();
if (cgContext == nullptr) {
// The Quartz surface handles 0x0 surfaces by internally
// making all operations no-ops; there's no cgcontext created for them.
// Unfortunately, this means that callers that want to render
// directly to the CGContext need to be aware of this quirk.
return NS_OK;
}
#if 0
if (1 /*aWidgetType == NS_THEME_TEXTFIELD*/) {
fprintf(stderr, "Native theme drawing widget %d [%p] dis:%d in rect [%d %d %d %d]\n",
aWidgetType, aFrame, IsDisabled(aFrame), aRect.x, aRect.y, aRect.width, aRect.height);
fprintf(stderr, "Cairo matrix: [%f %f %f %f %f %f]\n",
mat.xx, mat.yx, mat.xy, mat.yy, mat.x0, mat.y0);
fprintf(stderr, "Native theme xform[0]: [%f %f %f %f %f %f]\n",
mm0.a, mm0.b, mm0.c, mm0.d, mm0.tx, mm0.ty);
CGAffineTransform mm = CGContextGetCTM(cgContext);
fprintf(stderr, "Native theme xform[1]: [%f %f %f %f %f %f]\n",
mm.a, mm.b, mm.c, mm.d, mm.tx, mm.ty);
}
#endif
CGRect macRect = CGRectMake(nativeWidgetRect.X(), nativeWidgetRect.Y(),
nativeWidgetRect.Width(), nativeWidgetRect.Height());
#if 0
fprintf(stderr, " --> macRect %f %f %f %f\n",
macRect.origin.x, macRect.origin.y, macRect.size.width, macRect.size.height);
CGRect bounds = CGContextGetClipBoundingBox(cgContext);
fprintf(stderr, " --> clip bounds: %f %f %f %f\n",
bounds.origin.x, bounds.origin.y, bounds.size.width, bounds.size.height);
//CGContextSetRGBFillColor(cgContext, 0.0, 0.0, 1.0, 0.1);
//CGContextFillRect(cgContext, bounds);
#endif
nsEventStates eventState = GetContentState(aFrame, aWidgetType);
switch (aWidgetType) {
case NS_THEME_DIALOG: {
HIThemeSetFill(kThemeBrushDialogBackgroundActive, NULL, cgContext, HITHEME_ORIENTATION);
CGContextFillRect(cgContext, macRect);
}
break;
case NS_THEME_MENUPOPUP: {
HIThemeMenuDrawInfo mdi;
memset(&mdi, 0, sizeof(mdi));
mdi.version = 0;
mdi.menuType = IsDisabled(aFrame, eventState) ?
static_cast<ThemeMenuType>(kThemeMenuTypeInactive) :
static_cast<ThemeMenuType>(kThemeMenuTypePopUp);
bool isLeftOfParent = false;
if (IsSubmenu(aFrame, &isLeftOfParent) && !isLeftOfParent) {
mdi.menuType = kThemeMenuTypeHierarchical;
}
// The rounded corners draw outside the frame.
CGRect deflatedRect = CGRectMake(macRect.origin.x, macRect.origin.y + 4,
macRect.size.width, macRect.size.height - 8);
HIThemeDrawMenuBackground(&deflatedRect, &mdi, cgContext, HITHEME_ORIENTATION);
}
break;
case NS_THEME_MENUITEM: {
if (thebesCtx->OriginalSurface()->GetContentType() == gfxASurface::CONTENT_COLOR_ALPHA) {
// Clear the background to get correct transparency.
CGContextClearRect(cgContext, macRect);
}
// maybe use kThemeMenuItemHierBackground or PopUpBackground instead of just Plain?
HIThemeMenuItemDrawInfo drawInfo;
memset(&drawInfo, 0, sizeof(drawInfo));
drawInfo.version = 0;
drawInfo.itemType = kThemeMenuItemPlain;
drawInfo.state = (IsDisabled(aFrame, eventState) ?
static_cast<ThemeMenuState>(kThemeMenuDisabled) :
CheckBooleanAttr(aFrame, nsGkAtoms::menuactive) ?
static_cast<ThemeMenuState>(kThemeMenuSelected) :
static_cast<ThemeMenuState>(kThemeMenuActive));
// XXX pass in the menu rect instead of always using the item rect
HIRect ignored;
HIThemeDrawMenuItem(&macRect, &macRect, &drawInfo, cgContext, HITHEME_ORIENTATION, &ignored);
}
break;
case NS_THEME_MENUSEPARATOR: {
ThemeMenuState menuState;
if (IsDisabled(aFrame, eventState)) {
menuState = kThemeMenuDisabled;
}
else {
menuState = CheckBooleanAttr(aFrame, nsGkAtoms::menuactive) ?
kThemeMenuSelected : kThemeMenuActive;
}
HIThemeMenuItemDrawInfo midi = { 0, kThemeMenuItemPlain, menuState };
HIThemeDrawMenuSeparator(&macRect, &macRect, &midi, cgContext, HITHEME_ORIENTATION);
}
break;
case NS_THEME_TOOLTIP:
CGContextSetRGBFillColor(cgContext, 0.996, 1.000, 0.792, 0.950);
CGContextFillRect(cgContext, macRect);
break;
case NS_THEME_CHECKBOX:
case NS_THEME_RADIO: {
bool isCheckbox = (aWidgetType == NS_THEME_CHECKBOX);
DrawCheckboxOrRadio(cgContext, isCheckbox, macRect, GetCheckedOrSelected(aFrame, !isCheckbox),
eventState, aFrame);
}
break;
case NS_THEME_BUTTON:
if (IsDefaultButton(aFrame)) {
if (!IsDisabled(aFrame, eventState) && FrameIsInActiveWindow(aFrame) &&
!QueueAnimatedContentForRefresh(aFrame->GetContent(), 10)) {
NS_WARNING("Unable to animate button!");
}
DrawButton(cgContext, kThemePushButton, macRect, true,
kThemeButtonOff, kThemeAdornmentNone, eventState, aFrame);
} else if (IsButtonTypeMenu(aFrame)) {
DrawDropdown(cgContext, macRect, eventState, aWidgetType, aFrame);
} else {
DrawPushButton(cgContext, macRect, eventState, aFrame);
}
break;
case NS_THEME_BUTTON_BEVEL:
DrawButton(cgContext, kThemeMediumBevelButton, macRect,
IsDefaultButton(aFrame), kThemeButtonOff, kThemeAdornmentNone,
eventState, aFrame);
break;
case NS_THEME_SPINNER: {
ThemeDrawState state = kThemeStateActive;
nsIContent* content = aFrame->GetContent();
if (content->AttrValueIs(kNameSpaceID_None, nsGkAtoms::state,
NS_LITERAL_STRING("up"), eCaseMatters)) {
state = kThemeStatePressedUp;
}
else if (content->AttrValueIs(kNameSpaceID_None, nsGkAtoms::state,
NS_LITERAL_STRING("down"), eCaseMatters)) {
state = kThemeStatePressedDown;
}
DrawSpinButtons(cgContext, kThemeIncDecButton, macRect, state,
kThemeAdornmentNone, eventState, aFrame);
}
break;
case NS_THEME_TOOLBAR_BUTTON:
DrawSegment(cgContext, macRect, eventState, aFrame, toolbarButtonRenderSettings);
break;
case NS_THEME_TOOLBAR_SEPARATOR: {
HIThemeSeparatorDrawInfo sdi = { 0, kThemeStateActive };
HIThemeDrawSeparator(&macRect, &sdi, cgContext, HITHEME_ORIENTATION);
}
break;
case NS_THEME_MOZ_MAC_UNIFIED_TOOLBAR:
case NS_THEME_TOOLBAR: {
NSWindow* win = NativeWindowForFrame(aFrame);
if (ToolbarCanBeUnified(cgContext, macRect, win)) {
DrawUnifiedToolbar(cgContext, macRect, win);
break;
}
BOOL isMain = [win isMainWindow];
CGRect drawRect = macRect;
// top border
drawRect.size.height = 1.0f;
DrawNativeGreyColorInRect(cgContext, toolbarTopBorderGrey, drawRect, isMain);
// background
drawRect.origin.y += drawRect.size.height;
drawRect.size.height = macRect.size.height - 2.0f;
DrawNativeGreyColorInRect(cgContext, toolbarFillGrey, drawRect, isMain);
// bottom border
drawRect.origin.y += drawRect.size.height;
drawRect.size.height = 1.0f;
DrawNativeGreyColorInRect(cgContext, toolbarBottomBorderGrey, drawRect, isMain);
}
break;
case NS_THEME_WINDOW_TITLEBAR: {
NSWindow* win = NativeWindowForFrame(aFrame);
BOOL isMain = [win isMainWindow];
float unifiedToolbarHeight = [(ToolbarWindow*)win unifiedToolbarHeight];
DrawNativeTitlebar(cgContext, macRect, unifiedToolbarHeight, isMain);
}
break;
case NS_THEME_TOOLBOX: {
HIThemeHeaderDrawInfo hdi = { 0, kThemeStateActive, kHIThemeHeaderKindWindow };
HIThemeDrawHeader(&macRect, &hdi, cgContext, HITHEME_ORIENTATION);
}
break;
case NS_THEME_STATUSBAR:
DrawStatusBar(cgContext, macRect, aFrame);
break;
case NS_THEME_DROPDOWN:
case NS_THEME_DROPDOWN_TEXTFIELD:
DrawDropdown(cgContext, macRect, eventState, aWidgetType, aFrame);
break;
case NS_THEME_DROPDOWN_BUTTON:
DrawButton(cgContext, kThemeArrowButton, macRect, false, kThemeButtonOn,
kThemeAdornmentArrowDownArrow, eventState, aFrame);
break;
case NS_THEME_GROUPBOX: {
HIThemeGroupBoxDrawInfo gdi = { 0, kThemeStateActive, kHIThemeGroupBoxKindPrimary };
HIThemeDrawGroupBox(&macRect, &gdi, cgContext, HITHEME_ORIENTATION);
break;
}
case NS_THEME_TEXTFIELD:
// HIThemeSetFill is not available on 10.3
CGContextSetRGBFillColor(cgContext, 1.0, 1.0, 1.0, 1.0);
CGContextFillRect(cgContext, macRect);
// XUL textboxes set the native appearance on the containing box, while
// concrete focus is set on the html:input element within it. We can
// though, check the focused attribute of xul textboxes in this case.
// On Mac, focus rings are always shown for textboxes, so we do not need
// to check the window's focus ring state here
if (aFrame->GetContent()->IsXUL() && IsFocused(aFrame)) {
eventState |= NS_EVENT_STATE_FOCUS;
}
DrawFrame(cgContext, kHIThemeFrameTextFieldSquare, macRect,
IsDisabled(aFrame, eventState) || IsReadOnly(aFrame), eventState);
break;
case NS_THEME_SEARCHFIELD:
DrawSearchField(cgContext, macRect, aFrame, eventState);
break;
case NS_THEME_PROGRESSBAR:
if (!QueueAnimatedContentForRefresh(aFrame->GetContent(), 30)) {
NS_WARNING("Unable to animate progressbar!");
}
DrawProgress(cgContext, macRect, IsIndeterminateProgress(aFrame, eventState),
aFrame->StyleDisplay()->mOrient != NS_STYLE_ORIENT_VERTICAL,
GetProgressValue(aFrame), GetProgressMaxValue(aFrame), aFrame);
break;
case NS_THEME_PROGRESSBAR_VERTICAL:
DrawProgress(cgContext, macRect, IsIndeterminateProgress(aFrame, eventState),
false, GetProgressValue(aFrame),
GetProgressMaxValue(aFrame), aFrame);
break;
case NS_THEME_METERBAR:
DrawMeter(cgContext, macRect, aFrame);
break;
case NS_THEME_PROGRESSBAR_CHUNK:
case NS_THEME_PROGRESSBAR_CHUNK_VERTICAL:
case NS_THEME_METERBAR_CHUNK:
// Do nothing: progress and meter bars cases will draw chunks.
break;
case NS_THEME_TREEVIEW_TWISTY:
DrawButton(cgContext, kThemeDisclosureButton, macRect, false,
kThemeDisclosureRight, kThemeAdornmentNone, eventState, aFrame);
break;
case NS_THEME_TREEVIEW_TWISTY_OPEN:
DrawButton(cgContext, kThemeDisclosureButton, macRect, false,
kThemeDisclosureDown, kThemeAdornmentNone, eventState, aFrame);
break;
case NS_THEME_TREEVIEW_HEADER_CELL: {
TreeSortDirection sortDirection = GetTreeSortDirection(aFrame);
DrawButton(cgContext, kThemeListHeaderButton, macRect, false,
sortDirection == eTreeSortDirection_Natural ? kThemeButtonOff : kThemeButtonOn,
sortDirection == eTreeSortDirection_Ascending ?
kThemeAdornmentHeaderButtonSortUp : kThemeAdornmentNone, eventState, aFrame);
}
break;
case NS_THEME_TREEVIEW_TREEITEM:
case NS_THEME_TREEVIEW:
// HIThemeSetFill is not available on 10.3
// HIThemeSetFill(kThemeBrushWhite, NULL, cgContext, HITHEME_ORIENTATION);
CGContextSetRGBFillColor(cgContext, 1.0, 1.0, 1.0, 1.0);
CGContextFillRect(cgContext, macRect);
break;
case NS_THEME_TREEVIEW_HEADER:
// do nothing, taken care of by individual header cells
case NS_THEME_TREEVIEW_HEADER_SORTARROW:
// do nothing, taken care of by treeview header
case NS_THEME_TREEVIEW_LINE:
// do nothing, these lines don't exist on macos
break;
case NS_THEME_SCALE_HORIZONTAL:
case NS_THEME_SCALE_VERTICAL: {
int32_t curpos = CheckIntAttr(aFrame, nsGkAtoms::curpos, 0);
int32_t minpos = CheckIntAttr(aFrame, nsGkAtoms::minpos, 0);
int32_t maxpos = CheckIntAttr(aFrame, nsGkAtoms::maxpos, 100);
if (!maxpos)
maxpos = 100;
bool reverse = aFrame->GetContent()->
AttrValueIs(kNameSpaceID_None, nsGkAtoms::dir,
NS_LITERAL_STRING("reverse"), eCaseMatters);
DrawScale(cgContext, macRect, eventState,
(aWidgetType == NS_THEME_SCALE_VERTICAL), reverse,
curpos, minpos, maxpos, aFrame);
}
break;
case NS_THEME_SCALE_THUMB_HORIZONTAL:
case NS_THEME_SCALE_THUMB_VERTICAL:
// do nothing, drawn by scale
break;
case NS_THEME_RANGE: {
nsRangeFrame *rangeFrame = do_QueryFrame(aFrame);
if (!rangeFrame) {
break;
}
// DrawScale requires integer min, max and value. This is purely for
// drawing, so we normalize to a range 0-1000 here.
int32_t value = int32_t(rangeFrame->GetValueAsFractionOfRange() * 1000);
int32_t min = 0;
int32_t max = 1000;
bool isVertical = !IsRangeHorizontal(aFrame);
bool reverseDir =
isVertical ||
rangeFrame->StyleVisibility()->mDirection == NS_STYLE_DIRECTION_RTL;
DrawScale(cgContext, macRect, eventState, isVertical, reverseDir,
value, min, max, aFrame);
break;
}
case NS_THEME_SCROLLBAR_SMALL:
case NS_THEME_SCROLLBAR:
if (!nsLookAndFeel::UseOverlayScrollbars()) {
DrawScrollbar(cgContext, macRect, aFrame);
}
break;
case NS_THEME_SCROLLBAR_THUMB_VERTICAL:
case NS_THEME_SCROLLBAR_THUMB_HORIZONTAL:
if (nsLookAndFeel::UseOverlayScrollbars()) {
BOOL isHorizontal = (aWidgetType == NS_THEME_SCROLLBAR_THUMB_HORIZONTAL);
BOOL isRolledOver = CheckBooleanAttr(GetParentScrollbarFrame(aFrame),
nsGkAtoms::hover);
if (!isRolledOver) {
if (isHorizontal) {
macRect.origin.y += 4;
macRect.size.height -= 4;
} else {
if (aFrame->StyleVisibility()->mDirection !=
NS_STYLE_DIRECTION_RTL) {
macRect.origin.x += 4;
}
macRect.size.width -= 4;
}
}
const BOOL isOnTopOfDarkBackground = IsDarkBackground(aFrame);
CUIDraw([NSWindow coreUIRenderer], macRect, cgContext,
(CFDictionaryRef)[NSDictionary dictionaryWithObjectsAndKeys:
@"kCUIWidgetOverlayScrollBar", @"widget",
@"regular", @"size",
(isRolledOver ? @"rollover" : @""), @"state",
(isHorizontal ? @"kCUIOrientHorizontal" : @"kCUIOrientVertical"), @"kCUIOrientationKey",
(isOnTopOfDarkBackground ? @"kCUIVariantWhite" : @""), @"kCUIVariantKey",
[NSNumber numberWithBool:YES], @"indiconly",
[NSNumber numberWithBool:YES], @"kCUIThumbProportionKey",
[NSNumber numberWithBool:YES], @"is.flipped",
nil],
nil);
}
break;
case NS_THEME_SCROLLBAR_BUTTON_UP:
case NS_THEME_SCROLLBAR_BUTTON_LEFT:
#if SCROLLBARS_VISUAL_DEBUG
CGContextSetRGBFillColor(cgContext, 1.0, 0, 0, 0.6);
CGContextFillRect(cgContext, macRect);
#endif
break;
case NS_THEME_SCROLLBAR_BUTTON_DOWN:
case NS_THEME_SCROLLBAR_BUTTON_RIGHT:
#if SCROLLBARS_VISUAL_DEBUG
CGContextSetRGBFillColor(cgContext, 0, 1.0, 0, 0.6);
CGContextFillRect(cgContext, macRect);
#endif
break;
case NS_THEME_SCROLLBAR_TRACK_HORIZONTAL:
case NS_THEME_SCROLLBAR_TRACK_VERTICAL:
if (nsLookAndFeel::UseOverlayScrollbars() &&
CheckBooleanAttr(GetParentScrollbarFrame(aFrame), nsGkAtoms::hover)) {
BOOL isHorizontal = (aWidgetType == NS_THEME_SCROLLBAR_TRACK_HORIZONTAL);
const BOOL isOnTopOfDarkBackground = IsDarkBackground(aFrame);
CUIDraw([NSWindow coreUIRenderer], macRect, cgContext,
(CFDictionaryRef)[NSDictionary dictionaryWithObjectsAndKeys:
@"kCUIWidgetOverlayScrollBar", @"widget",
@"regular", @"size",
(isHorizontal ? @"kCUIOrientHorizontal" : @"kCUIOrientVertical"), @"kCUIOrientationKey",
(isOnTopOfDarkBackground ? @"kCUIVariantWhite" : @""), @"kCUIVariantKey",
[NSNumber numberWithBool:YES], @"noindicator",
[NSNumber numberWithBool:YES], @"kCUIThumbProportionKey",
[NSNumber numberWithBool:YES], @"is.flipped",
nil],
nil);
}
break;
case NS_THEME_TEXTFIELD_MULTILINE: {
// we have to draw this by hand because there is no HITheme value for it
CGContextSetRGBFillColor(cgContext, 1.0, 1.0, 1.0, 1.0);
CGContextFillRect(cgContext, macRect);
CGContextSetLineWidth(cgContext, 1.0);
CGContextSetShouldAntialias(cgContext, false);
// stroke everything but the top line of the text area
CGContextSetRGBStrokeColor(cgContext, 0.6, 0.6, 0.6, 1.0);
CGContextBeginPath(cgContext);
CGContextMoveToPoint(cgContext, macRect.origin.x, macRect.origin.y + 1);
CGContextAddLineToPoint(cgContext, macRect.origin.x, macRect.origin.y + macRect.size.height);
CGContextAddLineToPoint(cgContext, macRect.origin.x + macRect.size.width - 1, macRect.origin.y + macRect.size.height);
CGContextAddLineToPoint(cgContext, macRect.origin.x + macRect.size.width - 1, macRect.origin.y + 1);
CGContextStrokePath(cgContext);
// stroke the line across the top of the text area
CGContextSetRGBStrokeColor(cgContext, 0.4510, 0.4510, 0.4510, 1.0);
CGContextBeginPath(cgContext);
CGContextMoveToPoint(cgContext, macRect.origin.x, macRect.origin.y + 1);
CGContextAddLineToPoint(cgContext, macRect.origin.x + macRect.size.width - 1, macRect.origin.y + 1);
CGContextStrokePath(cgContext);
// draw a focus ring
if (eventState.HasState(NS_EVENT_STATE_FOCUS)) {
// We need to bring the rectangle in by 1 pixel on each side.
CGRect cgr = CGRectMake(macRect.origin.x + 1,
macRect.origin.y + 1,
macRect.size.width - 2,
macRect.size.height - 2);
HIThemeDrawFocusRect(&cgr, true, cgContext, kHIThemeOrientationNormal);
}
}
break;
case NS_THEME_LISTBOX: {
// We have to draw this by hand because kHIThemeFrameListBox drawing
// is buggy on 10.5, see bug 579259.
CGContextSetRGBFillColor(cgContext, 1.0, 1.0, 1.0, 1.0);
CGContextFillRect(cgContext, macRect);
// #8E8E8E for the top border, #BEBEBE for the rest.
float x = macRect.origin.x, y = macRect.origin.y;
float w = macRect.size.width, h = macRect.size.height;
CGContextSetRGBFillColor(cgContext, 0.557, 0.557, 0.557, 1.0);
CGContextFillRect(cgContext, CGRectMake(x, y, w, 1));
CGContextSetRGBFillColor(cgContext, 0.745, 0.745, 0.745, 1.0);
CGContextFillRect(cgContext, CGRectMake(x, y + 1, 1, h - 1));
CGContextFillRect(cgContext, CGRectMake(x + w - 1, y + 1, 1, h - 1));
CGContextFillRect(cgContext, CGRectMake(x + 1, y + h - 1, w - 2, 1));
}
break;
case NS_THEME_TAB:
DrawSegment(cgContext, macRect, eventState, aFrame, tabRenderSettings);
break;
case NS_THEME_TAB_PANELS:
DrawTabPanel(cgContext, macRect, aFrame);
break;
case NS_THEME_RESIZER:
DrawResizer(cgContext, macRect, aFrame);
break;
}
nativeDrawing.EndNativeDrawing();
return NS_OK;
NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
}
nsIntMargin
nsNativeThemeCocoa::RTLAwareMargin(const nsIntMargin& aMargin, nsIFrame* aFrame)
{
if (IsFrameRTL(aFrame)) {
// Return a copy of aMargin w/ right & left reversed:
return nsIntMargin(aMargin.top, aMargin.left,
aMargin.bottom, aMargin.right);
}
return aMargin;
}
static const nsIntMargin kAquaDropdownBorder(1, 22, 2, 5);
static const nsIntMargin kAquaComboboxBorder(3, 20, 3, 4);
static const nsIntMargin kAquaSearchfieldBorder(3, 5, 2, 19);
NS_IMETHODIMP
nsNativeThemeCocoa::GetWidgetBorder(nsDeviceContext* aContext,
nsIFrame* aFrame,
uint8_t aWidgetType,
nsIntMargin* aResult)
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;
aResult->SizeTo(0, 0, 0, 0);
switch (aWidgetType) {
case NS_THEME_BUTTON:
{
if (IsButtonTypeMenu(aFrame)) {
*aResult = RTLAwareMargin(kAquaDropdownBorder, aFrame);
} else {
aResult->SizeTo(1, 7, 3, 7);
}
break;
}
case NS_THEME_TOOLBAR_BUTTON:
{
aResult->SizeTo(1, 4, 1, 4);
break;
}
case NS_THEME_CHECKBOX:
case NS_THEME_RADIO:
{
// nsFormControlFrame::GetIntrinsicWidth and nsFormControlFrame::GetIntrinsicHeight
// assume a border width of 2px.
aResult->SizeTo(2, 2, 2, 2);
break;
}
case NS_THEME_DROPDOWN:
case NS_THEME_DROPDOWN_BUTTON:
*aResult = RTLAwareMargin(kAquaDropdownBorder, aFrame);
break;
case NS_THEME_DROPDOWN_TEXTFIELD:
*aResult = RTLAwareMargin(kAquaComboboxBorder, aFrame);
break;
case NS_THEME_TEXTFIELD:
{
SInt32 frameOutset = 0;
::GetThemeMetric(kThemeMetricEditTextFrameOutset, &frameOutset);
SInt32 textPadding = 0;
::GetThemeMetric(kThemeMetricEditTextWhitespace, &textPadding);
frameOutset += textPadding;
aResult->SizeTo(frameOutset, frameOutset, frameOutset, frameOutset);
break;
}
case NS_THEME_TEXTFIELD_MULTILINE:
aResult->SizeTo(1, 1, 1, 1);
break;
case NS_THEME_SEARCHFIELD:
*aResult = RTLAwareMargin(kAquaSearchfieldBorder, aFrame);
break;
case NS_THEME_LISTBOX:
{
SInt32 frameOutset = 0;
::GetThemeMetric(kThemeMetricListBoxFrameOutset, &frameOutset);
aResult->SizeTo(frameOutset, frameOutset, frameOutset, frameOutset);
break;
}
case NS_THEME_SCROLLBAR_TRACK_HORIZONTAL:
case NS_THEME_SCROLLBAR_TRACK_VERTICAL:
{
bool isHorizontal = (aWidgetType == NS_THEME_SCROLLBAR_TRACK_HORIZONTAL);
// On Lion and later, scrollbars have no arrows.
if (!nsCocoaFeatures::OnLionOrLater()) {
// There's only an endcap to worry about when both arrows are on the bottom
NSString *buttonPlacement = [[NSUserDefaults standardUserDefaults] objectForKey:@"AppleScrollBarVariant"];
if (!buttonPlacement || [buttonPlacement isEqualToString:@"DoubleMax"]) {
nsIFrame *scrollbarFrame = GetParentScrollbarFrame(aFrame);
if (!scrollbarFrame) return NS_ERROR_FAILURE;
bool isSmall = (scrollbarFrame->StyleDisplay()->mAppearance == NS_THEME_SCROLLBAR_SMALL);
// There isn't a metric for this, so just hardcode a best guess at the value.
// This value is even less exact due to the fact that the endcap is partially concave.
int32_t endcapSize = isSmall ? 5 : 6;
if (isHorizontal)
aResult->SizeTo(0, 0, 0, endcapSize);
else
aResult->SizeTo(endcapSize, 0, 0, 0);
}
}
if (nsLookAndFeel::UseOverlayScrollbars()) {
if (isHorizontal) {
aResult->SizeTo(2, 1, 1, 1);
} else {
aResult->SizeTo(1, 1, 1, 2);
}
}
break;
}
case NS_THEME_STATUSBAR:
aResult->SizeTo(1, 0, 0, 0);
break;
}
if (IsHiDPIContext(aContext)) {
*aResult = *aResult + *aResult; // doubled
}
return NS_OK;
NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
}
// Return false here to indicate that CSS padding values should be used. There is
// no reason to make a distinction between padding and border values, just specify
// whatever values you want in GetWidgetBorder and only use this to return true
// if you want to override CSS padding values.
bool
nsNativeThemeCocoa::GetWidgetPadding(nsDeviceContext* aContext,
nsIFrame* aFrame,
uint8_t aWidgetType,
nsIntMargin* aResult)
{
// We don't want CSS padding being used for certain widgets.
// See bug 381639 for an example of why.
switch (aWidgetType) {
case NS_THEME_BUTTON:
// Radios and checkboxes return a fixed size in GetMinimumWidgetSize
// and have a meaningful baseline, so they can't have
// author-specified padding.
case NS_THEME_CHECKBOX:
case NS_THEME_RADIO:
aResult->SizeTo(0, 0, 0, 0);
return true;
}
return false;
}
bool
nsNativeThemeCocoa::GetWidgetOverflow(nsDeviceContext* aContext, nsIFrame* aFrame,
uint8_t aWidgetType, nsRect* aOverflowRect)
{
int32_t p2a = aContext->AppUnitsPerDevPixel();
switch (aWidgetType) {
case NS_THEME_BUTTON:
case NS_THEME_TOOLBAR_BUTTON:
case NS_THEME_TEXTFIELD:
case NS_THEME_TEXTFIELD_MULTILINE:
case NS_THEME_SEARCHFIELD:
case NS_THEME_LISTBOX:
case NS_THEME_DROPDOWN:
case NS_THEME_DROPDOWN_BUTTON:
case NS_THEME_DROPDOWN_TEXTFIELD:
case NS_THEME_CHECKBOX:
case NS_THEME_RADIO:
case NS_THEME_TAB:
{
// We assume that the above widgets can draw a focus ring that will be less than
// or equal to 4 pixels thick.
nsIntMargin extraSize = nsIntMargin(MAX_FOCUS_RING_WIDTH,
MAX_FOCUS_RING_WIDTH,
MAX_FOCUS_RING_WIDTH,
MAX_FOCUS_RING_WIDTH);
nsMargin m(NSIntPixelsToAppUnits(extraSize.top, p2a),
NSIntPixelsToAppUnits(extraSize.right, p2a),
NSIntPixelsToAppUnits(extraSize.bottom, p2a),
NSIntPixelsToAppUnits(extraSize.left, p2a));
aOverflowRect->Inflate(m);
return true;
}
case NS_THEME_PROGRESSBAR:
{
// Progress bars draw a 2 pixel white shadow under their progress indicators
nsMargin m(0, 0, NSIntPixelsToAppUnits(2, p2a), 0);
aOverflowRect->Inflate(m);
return true;
}
}
return false;
}
static const int32_t kRegularScrollbarThumbMinSize = 26;
static const int32_t kSmallScrollbarThumbMinSize = 26;
NS_IMETHODIMP
nsNativeThemeCocoa::GetMinimumWidgetSize(nsRenderingContext* aContext,
nsIFrame* aFrame,
uint8_t aWidgetType,
nsIntSize* aResult,
bool* aIsOverridable)
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;
aResult->SizeTo(0,0);
*aIsOverridable = true;
switch (aWidgetType) {
case NS_THEME_BUTTON:
{
aResult->SizeTo(pushButtonSettings.minimumSizes[miniControlSize].width,
pushButtonSettings.naturalSizes[miniControlSize].height);
break;
}
case NS_THEME_TOOLBAR_BUTTON:
{
aResult->SizeTo(0, toolbarButtonHeights[miniControlSize]);
break;
}
case NS_THEME_SPINNER:
{
SInt32 buttonHeight = 0, buttonWidth = 0;
::GetThemeMetric(kThemeMetricLittleArrowsWidth, &buttonWidth);
::GetThemeMetric(kThemeMetricLittleArrowsHeight, &buttonHeight);
aResult->SizeTo(buttonWidth, buttonHeight);
*aIsOverridable = false;
break;
}
case NS_THEME_DROPDOWN:
case NS_THEME_DROPDOWN_BUTTON:
{
SInt32 popupHeight = 0;
::GetThemeMetric(kThemeMetricPopupButtonHeight, &popupHeight);
aResult->SizeTo(0, popupHeight);
break;
}
case NS_THEME_TEXTFIELD:
case NS_THEME_TEXTFIELD_MULTILINE:
case NS_THEME_SEARCHFIELD:
{
// at minimum, we should be tall enough for 9pt text.
// I'm using hardcoded values here because the appearance manager
// values for the frame size are incorrect.
aResult->SizeTo(0, (2 + 2) /* top */ + 9 + (1 + 1) /* bottom */);
break;
}
case NS_THEME_PROGRESSBAR:
{
SInt32 barHeight = 0;
::GetThemeMetric(kThemeMetricNormalProgressBarThickness, &barHeight);
aResult->SizeTo(0, barHeight);
break;
}
case NS_THEME_TREEVIEW_TWISTY:
case NS_THEME_TREEVIEW_TWISTY_OPEN:
{
SInt32 twistyHeight = 0, twistyWidth = 0;
::GetThemeMetric(kThemeMetricDisclosureButtonWidth, &twistyWidth);
::GetThemeMetric(kThemeMetricDisclosureButtonHeight, &twistyHeight);
aResult->SizeTo(twistyWidth, twistyHeight);
*aIsOverridable = false;
break;
}
case NS_THEME_TREEVIEW_HEADER:
case NS_THEME_TREEVIEW_HEADER_CELL:
{
SInt32 headerHeight = 0;
::GetThemeMetric(kThemeMetricListHeaderHeight, &headerHeight);
aResult->SizeTo(0, headerHeight - 1); // We don't need the top border.
break;
}
case NS_THEME_TAB:
{
aResult->SizeTo(0, tabHeights[miniControlSize]);
break;
}
case NS_THEME_RANGE:
{
// The Mac Appearance Manager API (the old API we're currently using)
// doesn't define constants to obtain a minimum size for sliders. We use
// the "thickness" of a slider that has default dimensions for both the
// minimum width and height to get something sane and so that paint
// invalidation works.
SInt32 size = 0;
if (IsRangeHorizontal(aFrame)) {
::GetThemeMetric(kThemeMetricHSliderHeight, &size);
} else {
::GetThemeMetric(kThemeMetricVSliderWidth, &size);
}
aResult->SizeTo(size, size);
*aIsOverridable = true;
break;
}
case NS_THEME_RANGE_THUMB:
{
SInt32 width = 0;
SInt32 height = 0;
::GetThemeMetric(kThemeMetricSliderMinThumbWidth, &width);
::GetThemeMetric(kThemeMetricSliderMinThumbHeight, &height);
aResult->SizeTo(width, height);
*aIsOverridable = false;
break;
}
case NS_THEME_SCALE_HORIZONTAL:
{
SInt32 scaleHeight = 0;
::GetThemeMetric(kThemeMetricHSliderHeight, &scaleHeight);
aResult->SizeTo(scaleHeight, scaleHeight);
*aIsOverridable = false;
break;
}
case NS_THEME_SCALE_VERTICAL:
{
SInt32 scaleWidth = 0;
::GetThemeMetric(kThemeMetricVSliderWidth, &scaleWidth);
aResult->SizeTo(scaleWidth, scaleWidth);
*aIsOverridable = false;
break;
}
case NS_THEME_SCROLLBAR_THUMB_HORIZONTAL:
case NS_THEME_SCROLLBAR_THUMB_VERTICAL:
{
// Find our parent scrollbar frame in order to find out whether we're in
// a small or a large scrollbar.
nsIFrame *scrollbarFrame = GetParentScrollbarFrame(aFrame);
if (!scrollbarFrame)
return NS_ERROR_FAILURE;
bool isSmall = (scrollbarFrame->StyleDisplay()->mAppearance == NS_THEME_SCROLLBAR_SMALL);
bool isHorizontal = (aWidgetType == NS_THEME_SCROLLBAR_THUMB_HORIZONTAL);
int32_t& minSize = isHorizontal ? aResult->width : aResult->height;
minSize = isSmall ? kSmallScrollbarThumbMinSize : kRegularScrollbarThumbMinSize;
break;
}
case NS_THEME_SCROLLBAR:
case NS_THEME_SCROLLBAR_SMALL:
case NS_THEME_SCROLLBAR_TRACK_VERTICAL:
case NS_THEME_SCROLLBAR_TRACK_HORIZONTAL:
{
*aIsOverridable = false;
if (nsLookAndFeel::UseOverlayScrollbars()) {
nsIFrame* scrollbarFrame = GetParentScrollbarFrame(aFrame);
if (scrollbarFrame &&
scrollbarFrame->StyleDisplay()->mAppearance ==
NS_THEME_SCROLLBAR_SMALL) {
aResult->SizeTo(14, 14);
}
else {
aResult->SizeTo(16, 16);
}
break;
}
// yeah, i know i'm cheating a little here, but i figure that it
// really doesn't matter if the scrollbar is vertical or horizontal
// and the width metric is a really good metric for every piece
// of the scrollbar.
nsIFrame *scrollbarFrame = GetParentScrollbarFrame(aFrame);
if (!scrollbarFrame) return NS_ERROR_FAILURE;
int32_t themeMetric = (scrollbarFrame->StyleDisplay()->mAppearance == NS_THEME_SCROLLBAR_SMALL) ?
kThemeMetricSmallScrollBarWidth :
kThemeMetricScrollBarWidth;
SInt32 scrollbarWidth = 0;
::GetThemeMetric(themeMetric, &scrollbarWidth);
aResult->SizeTo(scrollbarWidth, scrollbarWidth);
break;
}
case NS_THEME_SCROLLBAR_NON_DISAPPEARING:
{
int32_t themeMetric = kThemeMetricScrollBarWidth;
if (aFrame) {
nsIFrame* scrollbarFrame = GetParentScrollbarFrame(aFrame);
if (scrollbarFrame &&
scrollbarFrame->StyleDisplay()->mAppearance ==
NS_THEME_SCROLLBAR_SMALL) {
// XXX We're interested in the width of non-disappearing scrollbars
// to leave enough space for a dropmarker in non-native styled
// comboboxes (bug 869314). It isn't clear to me if comboboxes can
// ever have small scrollbars.
themeMetric = kThemeMetricSmallScrollBarWidth;
}
}
SInt32 scrollbarWidth = 0;
::GetThemeMetric(themeMetric, &scrollbarWidth);
aResult->SizeTo(scrollbarWidth, scrollbarWidth);
break;
}
case NS_THEME_SCROLLBAR_BUTTON_UP:
case NS_THEME_SCROLLBAR_BUTTON_DOWN:
case NS_THEME_SCROLLBAR_BUTTON_LEFT:
case NS_THEME_SCROLLBAR_BUTTON_RIGHT:
{
nsIFrame *scrollbarFrame = GetParentScrollbarFrame(aFrame);
if (!scrollbarFrame) return NS_ERROR_FAILURE;
// Since there is no NS_THEME_SCROLLBAR_BUTTON_UP_SMALL we need to ask the parent what appearance style it has.
int32_t themeMetric = (scrollbarFrame->StyleDisplay()->mAppearance == NS_THEME_SCROLLBAR_SMALL) ?
kThemeMetricSmallScrollBarWidth :
kThemeMetricScrollBarWidth;
SInt32 scrollbarWidth = 0;
::GetThemeMetric(themeMetric, &scrollbarWidth);
// It seems that for both sizes of scrollbar, the buttons are one pixel "longer".
if (aWidgetType == NS_THEME_SCROLLBAR_BUTTON_LEFT || aWidgetType == NS_THEME_SCROLLBAR_BUTTON_RIGHT)
aResult->SizeTo(scrollbarWidth+1, scrollbarWidth);
else
aResult->SizeTo(scrollbarWidth, scrollbarWidth+1);
*aIsOverridable = false;
break;
}
case NS_THEME_RESIZER:
{
HIThemeGrowBoxDrawInfo drawInfo;
drawInfo.version = 0;
drawInfo.state = kThemeStateActive;
drawInfo.kind = kHIThemeGrowBoxKindNormal;
drawInfo.direction = kThemeGrowRight | kThemeGrowDown;
drawInfo.size = kHIThemeGrowBoxSizeNormal;
HIPoint pnt = { 0, 0 };
HIRect bounds;
HIThemeGetGrowBoxBounds(&pnt, &drawInfo, &bounds);
aResult->SizeTo(bounds.size.width, bounds.size.height);
*aIsOverridable = false;
}
}
if (IsHiDPIContext(aContext->DeviceContext())) {
*aResult = *aResult * 2;
}
return NS_OK;
NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
}
NS_IMETHODIMP
nsNativeThemeCocoa::WidgetStateChanged(nsIFrame* aFrame, uint8_t aWidgetType,
nsIAtom* aAttribute, bool* aShouldRepaint)
{
// Some widget types just never change state.
switch (aWidgetType) {
case NS_THEME_TOOLBOX:
case NS_THEME_TOOLBAR:
case NS_THEME_MOZ_MAC_UNIFIED_TOOLBAR:
case NS_THEME_STATUSBAR:
case NS_THEME_STATUSBAR_PANEL:
case NS_THEME_STATUSBAR_RESIZER_PANEL:
case NS_THEME_TOOLTIP:
case NS_THEME_TAB_PANELS:
case NS_THEME_TAB_PANEL:
case NS_THEME_DIALOG:
case NS_THEME_MENUPOPUP:
case NS_THEME_GROUPBOX:
case NS_THEME_PROGRESSBAR_CHUNK:
case NS_THEME_PROGRESSBAR_CHUNK_VERTICAL:
case NS_THEME_PROGRESSBAR:
case NS_THEME_PROGRESSBAR_VERTICAL:
case NS_THEME_METERBAR:
case NS_THEME_METERBAR_CHUNK:
*aShouldRepaint = false;
return NS_OK;
}
// XXXdwh Not sure what can really be done here. Can at least guess for
// specific widgets that they're highly unlikely to have certain states.
// For example, a toolbar doesn't care about any states.
if (!aAttribute) {
// Hover/focus/active changed. Always repaint.
*aShouldRepaint = true;
} else {
// Check the attribute to see if it's relevant.
// disabled, checked, dlgtype, default, etc.
*aShouldRepaint = false;
if (aAttribute == nsGkAtoms::disabled ||
aAttribute == nsGkAtoms::checked ||
aAttribute == nsGkAtoms::selected ||
aAttribute == nsGkAtoms::menuactive ||
aAttribute == nsGkAtoms::sortDirection ||
aAttribute == nsGkAtoms::focused ||
aAttribute == nsGkAtoms::_default ||
aAttribute == nsGkAtoms::open ||
aAttribute == nsGkAtoms::hover)
*aShouldRepaint = true;
}
return NS_OK;
}
NS_IMETHODIMP
nsNativeThemeCocoa::ThemeChanged()
{
// This is unimplemented because we don't care if gecko changes its theme
// and Mac OS X doesn't have themes.
return NS_OK;
}
bool
nsNativeThemeCocoa::ThemeSupportsWidget(nsPresContext* aPresContext, nsIFrame* aFrame,
uint8_t aWidgetType)
{
// We don't have CSS set up to render non-native scrollbars on Mac OS X so we
// render natively even if native theme support is disabled.
if (aWidgetType != NS_THEME_SCROLLBAR &&
aPresContext && !aPresContext->PresShell()->IsThemeSupportEnabled())
return false;
// if this is a dropdown button in a combobox the answer is always no
if (aWidgetType == NS_THEME_DROPDOWN_BUTTON) {
nsIFrame* parentFrame = aFrame->GetParent();
if (parentFrame && (parentFrame->GetType() == nsGkAtoms::comboboxControlFrame))
return false;
}
switch (aWidgetType) {
case NS_THEME_LISTBOX:
case NS_THEME_DIALOG:
case NS_THEME_WINDOW:
case NS_THEME_WINDOW_TITLEBAR:
case NS_THEME_MENUPOPUP:
case NS_THEME_MENUITEM:
case NS_THEME_MENUSEPARATOR:
case NS_THEME_TOOLTIP:
case NS_THEME_CHECKBOX:
case NS_THEME_CHECKBOX_CONTAINER:
case NS_THEME_RADIO:
case NS_THEME_RADIO_CONTAINER:
case NS_THEME_GROUPBOX:
case NS_THEME_BUTTON:
case NS_THEME_BUTTON_BEVEL:
case NS_THEME_TOOLBAR_BUTTON:
case NS_THEME_SPINNER:
case NS_THEME_TOOLBAR:
case NS_THEME_MOZ_MAC_UNIFIED_TOOLBAR:
case NS_THEME_STATUSBAR:
case NS_THEME_TEXTFIELD:
case NS_THEME_TEXTFIELD_MULTILINE:
case NS_THEME_SEARCHFIELD:
//case NS_THEME_TOOLBOX:
//case NS_THEME_TOOLBAR_BUTTON:
case NS_THEME_PROGRESSBAR:
case NS_THEME_PROGRESSBAR_VERTICAL:
case NS_THEME_PROGRESSBAR_CHUNK:
case NS_THEME_PROGRESSBAR_CHUNK_VERTICAL:
case NS_THEME_METERBAR:
case NS_THEME_METERBAR_CHUNK:
case NS_THEME_TOOLBAR_SEPARATOR:
case NS_THEME_TAB_PANELS:
case NS_THEME_TAB:
case NS_THEME_TREEVIEW_TWISTY:
case NS_THEME_TREEVIEW_TWISTY_OPEN:
case NS_THEME_TREEVIEW:
case NS_THEME_TREEVIEW_HEADER:
case NS_THEME_TREEVIEW_HEADER_CELL:
case NS_THEME_TREEVIEW_HEADER_SORTARROW:
case NS_THEME_TREEVIEW_TREEITEM:
case NS_THEME_TREEVIEW_LINE:
case NS_THEME_RANGE:
case NS_THEME_SCALE_HORIZONTAL:
case NS_THEME_SCALE_THUMB_HORIZONTAL:
case NS_THEME_SCALE_VERTICAL:
case NS_THEME_SCALE_THUMB_VERTICAL:
case NS_THEME_SCROLLBAR:
case NS_THEME_SCROLLBAR_SMALL:
case NS_THEME_SCROLLBAR_BUTTON_UP:
case NS_THEME_SCROLLBAR_BUTTON_DOWN:
case NS_THEME_SCROLLBAR_BUTTON_LEFT:
case NS_THEME_SCROLLBAR_BUTTON_RIGHT:
case NS_THEME_SCROLLBAR_THUMB_HORIZONTAL:
case NS_THEME_SCROLLBAR_THUMB_VERTICAL:
case NS_THEME_SCROLLBAR_TRACK_VERTICAL:
case NS_THEME_SCROLLBAR_TRACK_HORIZONTAL:
case NS_THEME_SCROLLBAR_NON_DISAPPEARING:
case NS_THEME_DROPDOWN:
case NS_THEME_DROPDOWN_BUTTON:
case NS_THEME_DROPDOWN_TEXT:
case NS_THEME_DROPDOWN_TEXTFIELD:
return !IsWidgetStyled(aPresContext, aFrame, aWidgetType);
break;
case NS_THEME_RESIZER:
{
nsIFrame* parentFrame = aFrame->GetParent();
if (!parentFrame || parentFrame->GetType() != nsGkAtoms::scrollFrame)
return true;
// Note that IsWidgetStyled is not called for resizers on Mac. This is
// because for scrollable containers, the native resizer looks better
// when (non-overlay) scrollbars are present even when the style is
// overriden, and the custom transparent resizer looks better when
// scrollbars are not present.
nsIScrollableFrame* scrollFrame = do_QueryFrame(parentFrame);
return (!nsLookAndFeel::UseOverlayScrollbars() &&
scrollFrame && scrollFrame->GetScrollbarVisibility());
break;
}
}
return false;
}
bool
nsNativeThemeCocoa::WidgetIsContainer(uint8_t aWidgetType)
{
// flesh this out at some point
switch (aWidgetType) {
case NS_THEME_DROPDOWN_BUTTON:
case NS_THEME_RADIO:
case NS_THEME_CHECKBOX:
case NS_THEME_PROGRESSBAR:
case NS_THEME_METERBAR:
case NS_THEME_RANGE:
return false;
break;
}
return true;
}
bool
nsNativeThemeCocoa::ThemeDrawsFocusForWidget(uint8_t aWidgetType)
{
if (aWidgetType == NS_THEME_DROPDOWN ||
aWidgetType == NS_THEME_DROPDOWN_TEXTFIELD ||
aWidgetType == NS_THEME_BUTTON ||
aWidgetType == NS_THEME_RADIO ||
aWidgetType == NS_THEME_RANGE ||
aWidgetType == NS_THEME_CHECKBOX)
return true;
return false;
}
bool
nsNativeThemeCocoa::ThemeNeedsComboboxDropmarker()
{
return false;
}
nsITheme::Transparency
nsNativeThemeCocoa::GetWidgetTransparency(nsIFrame* aFrame, uint8_t aWidgetType)
{
switch (aWidgetType) {
case NS_THEME_MENUPOPUP:
case NS_THEME_TOOLTIP:
return eTransparent;
case NS_THEME_SCROLLBAR_SMALL:
case NS_THEME_SCROLLBAR:
return nsLookAndFeel::UseOverlayScrollbars() ? eTransparent : eOpaque;
case NS_THEME_STATUSBAR:
// Knowing that scrollbars and statusbars are opaque improves
// performance, because we create layers for them.
return eOpaque;
default:
return eUnknownTransparency;
}
}

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