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PlatWin.cxx    3307 lines (2920 with data), 94.5 kB

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// Scintilla source code edit control
/** @file PlatWin.cxx
** Implementation of platform facilities on Windows.
**/
// Copyright 1998-2003 by Neil Hodgson <neilh@scintilla.org>
// The License.txt file describes the conditions under which this software may be distributed.
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <stdarg.h>
#include <stdio.h>
#include <time.h>
#include <limits.h>
#include <math.h>
#include <vector>
#include <map>
#undef _WIN32_WINNT
#define _WIN32_WINNT 0x0500
#undef WINVER
#define WINVER 0x0500
#include <windows.h>
#include <commctrl.h>
#include <richedit.h>
#include <windowsx.h>
#if defined(NTDDI_WIN7) && !defined(DISABLE_D2D)
#define USE_D2D 1
#endif
#if defined(USE_D2D)
#include <d2d1.h>
#include <dwrite.h>
#endif
#include "Platform.h"
#include "UniConversion.h"
#include "XPM.h"
#include "FontQuality.h"
#ifndef IDC_HAND
#define IDC_HAND MAKEINTRESOURCE(32649)
#endif
// Take care of 32/64 bit pointers
#ifdef GetWindowLongPtr
static void *PointerFromWindow(HWND hWnd) {
return reinterpret_cast<void *>(::GetWindowLongPtr(hWnd, 0));
}
static void SetWindowPointer(HWND hWnd, void *ptr) {
::SetWindowLongPtr(hWnd, 0, reinterpret_cast<LONG_PTR>(ptr));
}
#else
static void *PointerFromWindow(HWND hWnd) {
return reinterpret_cast<void *>(::GetWindowLong(hWnd, 0));
}
static void SetWindowPointer(HWND hWnd, void *ptr) {
::SetWindowLong(hWnd, 0, reinterpret_cast<LONG>(ptr));
}
#ifndef GWLP_USERDATA
#define GWLP_USERDATA GWL_USERDATA
#endif
#ifndef GWLP_WNDPROC
#define GWLP_WNDPROC GWL_WNDPROC
#endif
#ifndef LONG_PTR
#define LONG_PTR LONG
#endif
static LONG_PTR SetWindowLongPtr(HWND hWnd, int nIndex, LONG_PTR dwNewLong) {
return ::SetWindowLong(hWnd, nIndex, dwNewLong);
}
static LONG_PTR GetWindowLongPtr(HWND hWnd, int nIndex) {
return ::GetWindowLong(hWnd, nIndex);
}
#endif
extern UINT CodePageFromCharSet(DWORD characterSet, UINT documentCodePage);
// Declarations needed for functions dynamically loaded as not available on all Windows versions.
typedef BOOL (WINAPI *AlphaBlendSig)(HDC, int, int, int, int, HDC, int, int, int, int, BLENDFUNCTION);
typedef HMONITOR (WINAPI *MonitorFromPointSig)(POINT, DWORD);
typedef HMONITOR (WINAPI *MonitorFromRectSig)(LPCRECT, DWORD);
typedef BOOL (WINAPI *GetMonitorInfoSig)(HMONITOR, LPMONITORINFO);
static CRITICAL_SECTION crPlatformLock;
static HINSTANCE hinstPlatformRes = 0;
static bool onNT = false;
static HMODULE hDLLImage = 0;
static AlphaBlendSig AlphaBlendFn = 0;
static HMODULE hDLLUser32 = 0;
static HMONITOR (WINAPI *MonitorFromPointFn)(POINT, DWORD) = 0;
static HMONITOR (WINAPI *MonitorFromRectFn)(LPCRECT, DWORD) = 0;
static BOOL (WINAPI *GetMonitorInfoFn)(HMONITOR, LPMONITORINFO) = 0;
static HCURSOR reverseArrowCursor = NULL;
bool IsNT() {
return onNT;
}
#ifdef SCI_NAMESPACE
using namespace Scintilla;
#endif
Point Point::FromLong(long lpoint) {
return Point(static_cast<short>(LOWORD(lpoint)), static_cast<short>(HIWORD(lpoint)));
}
static RECT RectFromPRectangle(PRectangle prc) {
RECT rc = {static_cast<LONG>(prc.left), static_cast<LONG>(prc.top),
static_cast<LONG>(prc.right), static_cast<LONG>(prc.bottom)};
return rc;
}
#if defined(USE_D2D)
IDWriteFactory *pIDWriteFactory = 0;
ID2D1Factory *pD2DFactory = 0;
bool LoadD2D() {
static bool triedLoadingD2D = false;
if (!triedLoadingD2D) {
typedef HRESULT (WINAPI *D2D1CFSig)(D2D1_FACTORY_TYPE factoryType, REFIID riid,
CONST D2D1_FACTORY_OPTIONS *pFactoryOptions, IUnknown **factory);
typedef HRESULT (WINAPI *DWriteCFSig)(DWRITE_FACTORY_TYPE factoryType, REFIID iid,
IUnknown **factory);
HMODULE hDLLD2D = ::LoadLibraryEx(TEXT("D2D1.DLL"), 0, 0x00000800 /*LOAD_LIBRARY_SEARCH_SYSTEM32*/);
if (hDLLD2D) {
D2D1CFSig fnD2DCF = (D2D1CFSig)::GetProcAddress(hDLLD2D, "D2D1CreateFactory");
if (fnD2DCF) {
// A single threaded factory as Scintilla always draw on the GUI thread
fnD2DCF(D2D1_FACTORY_TYPE_SINGLE_THREADED,
__uuidof(ID2D1Factory),
0,
reinterpret_cast<IUnknown**>(&pD2DFactory));
}
}
HMODULE hDLLDWrite = ::LoadLibraryEx(TEXT("DWRITE.DLL"), 0, 0x00000800 /*LOAD_LIBRARY_SEARCH_SYSTEM32*/);
if (hDLLDWrite) {
DWriteCFSig fnDWCF = (DWriteCFSig)::GetProcAddress(hDLLDWrite, "DWriteCreateFactory");
if (fnDWCF) {
fnDWCF(DWRITE_FACTORY_TYPE_SHARED,
__uuidof(IDWriteFactory),
reinterpret_cast<IUnknown**>(&pIDWriteFactory));
}
}
}
triedLoadingD2D = true;
return pIDWriteFactory && pD2DFactory;
}
#endif
struct FormatAndMetrics {
int technology;
HFONT hfont;
#if defined(USE_D2D)
IDWriteTextFormat *pTextFormat;
#endif
int extraFontFlag;
int characterSet;
FLOAT yAscent;
FLOAT yDescent;
FLOAT yInternalLeading;
FormatAndMetrics(HFONT hfont_, int extraFontFlag_, int characterSet_) :
technology(SCWIN_TECH_GDI), hfont(hfont_),
#if defined(USE_D2D)
pTextFormat(0),
#endif
extraFontFlag(extraFontFlag_), characterSet(characterSet_), yAscent(2), yDescent(1), yInternalLeading(0) {
}
#if defined(USE_D2D)
FormatAndMetrics(IDWriteTextFormat *pTextFormat_,
int extraFontFlag_,
int characterSet_,
FLOAT yAscent_,
FLOAT yDescent_,
FLOAT yInternalLeading_) :
technology(SCWIN_TECH_DIRECTWRITE),
hfont(0),
pTextFormat(pTextFormat_),
extraFontFlag(extraFontFlag_),
characterSet(characterSet_),
yAscent(yAscent_),
yDescent(yDescent_),
yInternalLeading(yInternalLeading_) {
}
#endif
~FormatAndMetrics() {
if (hfont)
::DeleteObject(hfont);
#if defined(USE_D2D)
if (pTextFormat)
pTextFormat->Release();
pTextFormat = 0;
#endif
extraFontFlag = 0;
characterSet = 0;
yAscent = 2;
yDescent = 1;
yInternalLeading = 0;
}
HFONT HFont();
};
HFONT FormatAndMetrics::HFont() {
LOGFONTW lf;
memset(&lf, 0, sizeof(lf));
#if defined(USE_D2D)
if (technology == SCWIN_TECH_GDI) {
if (0 == ::GetObjectW(hfont, sizeof(lf), &lf)) {
return 0;
}
} else {
HRESULT hr = pTextFormat->GetFontFamilyName(lf.lfFaceName, LF_FACESIZE);
if (!SUCCEEDED(hr)) {
return 0;
}
lf.lfWeight = pTextFormat->GetFontWeight();
lf.lfItalic = pTextFormat->GetFontStyle() == DWRITE_FONT_STYLE_ITALIC;
lf.lfHeight = -static_cast<int>(pTextFormat->GetFontSize());
}
#else
if (0 == ::GetObjectW(hfont, sizeof(lf), &lf)) {
return 0;
}
#endif
return ::CreateFontIndirectW(&lf);
}
#ifndef CLEARTYPE_QUALITY
#define CLEARTYPE_QUALITY 5
#endif
static BYTE Win32MapFontQuality(int extraFontFlag) {
switch (extraFontFlag & SC_EFF_QUALITY_MASK) {
case SC_EFF_QUALITY_NON_ANTIALIASED:
return NONANTIALIASED_QUALITY;
case SC_EFF_QUALITY_ANTIALIASED:
return ANTIALIASED_QUALITY;
case SC_EFF_QUALITY_LCD_OPTIMIZED:
return CLEARTYPE_QUALITY;
default:
return SC_EFF_QUALITY_DEFAULT;
}
}
#if defined(USE_D2D)
static D2D1_TEXT_ANTIALIAS_MODE DWriteMapFontQuality(int extraFontFlag) {
switch (extraFontFlag & SC_EFF_QUALITY_MASK) {
case SC_EFF_QUALITY_NON_ANTIALIASED:
return D2D1_TEXT_ANTIALIAS_MODE_ALIASED;
case SC_EFF_QUALITY_ANTIALIASED:
return D2D1_TEXT_ANTIALIAS_MODE_GRAYSCALE;
case SC_EFF_QUALITY_LCD_OPTIMIZED:
return D2D1_TEXT_ANTIALIAS_MODE_CLEARTYPE;
default:
return D2D1_TEXT_ANTIALIAS_MODE_DEFAULT;
}
}
#endif
static void SetLogFont(LOGFONTA &lf, const char *faceName, int characterSet, float size, int weight, bool italic, int extraFontFlag) {
memset(&lf, 0, sizeof(lf));
// The negative is to allow for leading
lf.lfHeight = -(abs(static_cast<int>(size + 0.5)));
lf.lfWeight = weight;
lf.lfItalic = static_cast<BYTE>(italic ? 1 : 0);
lf.lfCharSet = static_cast<BYTE>(characterSet);
lf.lfQuality = Win32MapFontQuality(extraFontFlag);
strncpy(lf.lfFaceName, faceName, sizeof(lf.lfFaceName));
}
/**
* Create a hash from the parameters for a font to allow easy checking for identity.
* If one font is the same as another, its hash will be the same, but if the hash is the
* same then they may still be different.
*/
static int HashFont(const FontParameters &fp) {
return
static_cast<int>(fp.size) ^
(fp.characterSet << 10) ^
((fp.extraFontFlag & SC_EFF_QUALITY_MASK) << 9) ^
((fp.weight/100) << 12) ^
(fp.italic ? 0x20000000 : 0) ^
(fp.technology << 15) ^
fp.faceName[0];
}
class FontCached : Font {
FontCached *next;
int usage;
float size;
LOGFONTA lf;
int technology;
int hash;
FontCached(const FontParameters &fp);
~FontCached() {}
bool SameAs(const FontParameters &fp);
virtual void Release();
static FontCached *first;
public:
static FontID FindOrCreate(const FontParameters &fp);
static void ReleaseId(FontID fid_);
};
FontCached *FontCached::first = 0;
FontCached::FontCached(const FontParameters &fp) :
next(0), usage(0), size(1.0), hash(0) {
SetLogFont(lf, fp.faceName, fp.characterSet, fp.size, fp.weight, fp.italic, fp.extraFontFlag);
technology = fp.technology;
hash = HashFont(fp);
fid = 0;
if (technology == SCWIN_TECH_GDI) {
HFONT hfont = ::CreateFontIndirectA(&lf);
fid = reinterpret_cast<void *>(new FormatAndMetrics(hfont, fp.extraFontFlag, fp.characterSet));
} else {
#if defined(USE_D2D)
IDWriteTextFormat *pTextFormat;
const int faceSize = 200;
WCHAR wszFace[faceSize];
UTF16FromUTF8(fp.faceName, static_cast<unsigned int>(strlen(fp.faceName))+1, wszFace, faceSize);
FLOAT fHeight = fp.size;
DWRITE_FONT_STYLE style = fp.italic ? DWRITE_FONT_STYLE_ITALIC : DWRITE_FONT_STYLE_NORMAL;
HRESULT hr = pIDWriteFactory->CreateTextFormat(wszFace, NULL,
static_cast<DWRITE_FONT_WEIGHT>(fp.weight),
style,
DWRITE_FONT_STRETCH_NORMAL, fHeight, L"en-us", &pTextFormat);
if (SUCCEEDED(hr)) {
pTextFormat->SetWordWrapping(DWRITE_WORD_WRAPPING_NO_WRAP);
const int maxLines = 2;
DWRITE_LINE_METRICS lineMetrics[maxLines];
UINT32 lineCount = 0;
FLOAT yAscent = 1.0f;
FLOAT yDescent = 1.0f;
FLOAT yInternalLeading = 0.0f;
IDWriteTextLayout *pTextLayout = 0;
hr = pIDWriteFactory->CreateTextLayout(L"X", 1, pTextFormat,
100.0f, 100.0f, &pTextLayout);
if (SUCCEEDED(hr)) {
hr = pTextLayout->GetLineMetrics(lineMetrics, maxLines, &lineCount);
if (SUCCEEDED(hr)) {
yAscent = lineMetrics[0].baseline;
yDescent = lineMetrics[0].height - lineMetrics[0].baseline;
FLOAT emHeight;
hr = pTextLayout->GetFontSize(0, &emHeight);
if (SUCCEEDED(hr)) {
yInternalLeading = lineMetrics[0].height - emHeight;
}
}
pTextLayout->Release();
pTextFormat->SetLineSpacing(DWRITE_LINE_SPACING_METHOD_UNIFORM, lineMetrics[0].height, lineMetrics[0].baseline);
}
fid = reinterpret_cast<void *>(new FormatAndMetrics(pTextFormat, fp.extraFontFlag, fp.characterSet, yAscent, yDescent, yInternalLeading));
}
#endif
}
usage = 1;
}
bool FontCached::SameAs(const FontParameters &fp) {
return
(size == fp.size) &&
(lf.lfWeight == fp.weight) &&
(lf.lfItalic == static_cast<BYTE>(fp.italic ? 1 : 0)) &&
(lf.lfCharSet == fp.characterSet) &&
(lf.lfQuality == Win32MapFontQuality(fp.extraFontFlag)) &&
(technology == fp.technology) &&
0 == strcmp(lf.lfFaceName,fp.faceName);
}
void FontCached::Release() {
delete reinterpret_cast<FormatAndMetrics *>(fid);
fid = 0;
}
FontID FontCached::FindOrCreate(const FontParameters &fp) {
FontID ret = 0;
::EnterCriticalSection(&crPlatformLock);
int hashFind = HashFont(fp);
for (FontCached *cur=first; cur; cur=cur->next) {
if ((cur->hash == hashFind) &&
cur->SameAs(fp)) {
cur->usage++;
ret = cur->fid;
}
}
if (ret == 0) {
FontCached *fc = new FontCached(fp);
if (fc) {
fc->next = first;
first = fc;
ret = fc->fid;
}
}
::LeaveCriticalSection(&crPlatformLock);
return ret;
}
void FontCached::ReleaseId(FontID fid_) {
::EnterCriticalSection(&crPlatformLock);
FontCached **pcur=&first;
for (FontCached *cur=first; cur; cur=cur->next) {
if (cur->fid == fid_) {
cur->usage--;
if (cur->usage == 0) {
*pcur = cur->next;
cur->Release();
cur->next = 0;
delete cur;
}
break;
}
pcur=&cur->next;
}
::LeaveCriticalSection(&crPlatformLock);
}
Font::Font() {
fid = 0;
}
Font::~Font() {
}
#define FONTS_CACHED
void Font::Create(const FontParameters &fp) {
Release();
if (fp.faceName)
fid = FontCached::FindOrCreate(fp);
}
void Font::Release() {
if (fid)
FontCached::ReleaseId(fid);
fid = 0;
}
// Buffer to hold strings and string position arrays without always allocating on heap.
// May sometimes have string too long to allocate on stack. So use a fixed stack-allocated buffer
// when less than safe size otherwise allocate on heap and free automatically.
template<typename T, int lengthStandard>
class VarBuffer {
T bufferStandard[lengthStandard];
// Private so VarBuffer objects can not be copied
VarBuffer(const VarBuffer &);
VarBuffer &operator=(const VarBuffer &);
public:
T *buffer;
VarBuffer(size_t length) : buffer(0) {
if (length > lengthStandard) {
buffer = new T[length];
} else {
buffer = bufferStandard;
}
}
~VarBuffer() {
if (buffer != bufferStandard) {
delete []buffer;
buffer = 0;
}
}
};
const int stackBufferLength = 10000;
class TextWide : public VarBuffer<wchar_t, stackBufferLength> {
public:
int tlen;
TextWide(const char *s, int len, bool unicodeMode, int codePage=0) :
VarBuffer<wchar_t, stackBufferLength>(len) {
if (unicodeMode) {
tlen = UTF16FromUTF8(s, len, buffer, len);
} else {
// Support Asian string display in 9x English
tlen = ::MultiByteToWideChar(codePage, 0, s, len, buffer, len);
}
}
};
typedef VarBuffer<XYPOSITION, stackBufferLength> TextPositions;
#ifdef SCI_NAMESPACE
namespace Scintilla {
#endif
class SurfaceGDI : public Surface {
bool unicodeMode;
HDC hdc;
bool hdcOwned;
HPEN pen;
HPEN penOld;
HBRUSH brush;
HBRUSH brushOld;
HFONT font;
HFONT fontOld;
HBITMAP bitmap;
HBITMAP bitmapOld;
int maxWidthMeasure;
int maxLenText;
int codePage;
// If 9x OS and current code page is same as ANSI code page.
bool win9xACPSame;
void BrushColor(ColourDesired back);
void SetFont(Font &font_);
// Private so SurfaceGDI objects can not be copied
SurfaceGDI(const SurfaceGDI &);
SurfaceGDI &operator=(const SurfaceGDI &);
public:
SurfaceGDI();
virtual ~SurfaceGDI();
void Init(WindowID wid);
void Init(SurfaceID sid, WindowID wid);
void InitPixMap(int width, int height, Surface *surface_, WindowID wid);
void Release();
bool Initialised();
void PenColour(ColourDesired fore);
int LogPixelsY();
int DeviceHeightFont(int points);
void MoveTo(int x_, int y_);
void LineTo(int x_, int y_);
void Polygon(Point *pts, int npts, ColourDesired fore, ColourDesired back);
void RectangleDraw(PRectangle rc, ColourDesired fore, ColourDesired back);
void FillRectangle(PRectangle rc, ColourDesired back);
void FillRectangle(PRectangle rc, Surface &surfacePattern);
void RoundedRectangle(PRectangle rc, ColourDesired fore, ColourDesired back);
void AlphaRectangle(PRectangle rc, int cornerSize, ColourDesired fill, int alphaFill,
ColourDesired outline, int alphaOutline, int flags);
void DrawRGBAImage(PRectangle rc, int width, int height, const unsigned char *pixelsImage);
void Ellipse(PRectangle rc, ColourDesired fore, ColourDesired back);
void Copy(PRectangle rc, Point from, Surface &surfaceSource);
void DrawTextCommon(PRectangle rc, Font &font_, XYPOSITION ybase, const char *s, int len, UINT fuOptions);
void DrawTextNoClip(PRectangle rc, Font &font_, XYPOSITION ybase, const char *s, int len, ColourDesired fore, ColourDesired back);
void DrawTextClipped(PRectangle rc, Font &font_, XYPOSITION ybase, const char *s, int len, ColourDesired fore, ColourDesired back);
void DrawTextTransparent(PRectangle rc, Font &font_, XYPOSITION ybase, const char *s, int len, ColourDesired fore);
void MeasureWidths(Font &font_, const char *s, int len, XYPOSITION *positions);
XYPOSITION WidthText(Font &font_, const char *s, int len);
XYPOSITION WidthChar(Font &font_, char ch);
XYPOSITION Ascent(Font &font_);
XYPOSITION Descent(Font &font_);
XYPOSITION InternalLeading(Font &font_);
XYPOSITION ExternalLeading(Font &font_);
XYPOSITION Height(Font &font_);
XYPOSITION AverageCharWidth(Font &font_);
void SetClip(PRectangle rc);
void FlushCachedState();
void SetUnicodeMode(bool unicodeMode_);
void SetDBCSMode(int codePage_);
};
#ifdef SCI_NAMESPACE
} //namespace Scintilla
#endif
SurfaceGDI::SurfaceGDI() :
unicodeMode(false),
hdc(0), hdcOwned(false),
pen(0), penOld(0),
brush(0), brushOld(0),
font(0), fontOld(0),
bitmap(0), bitmapOld(0) {
// Windows 9x has only a 16 bit coordinate system so break after 30000 pixels
maxWidthMeasure = IsNT() ? INT_MAX : 30000;
// There appears to be a 16 bit string length limit in GDI on NT and a limit of
// 8192 characters on Windows 95.
maxLenText = IsNT() ? 65535 : 8192;
codePage = 0;
win9xACPSame = false;
}
SurfaceGDI::~SurfaceGDI() {
Release();
}
void SurfaceGDI::Release() {
if (penOld) {
::SelectObject(reinterpret_cast<HDC>(hdc), penOld);
::DeleteObject(pen);
penOld = 0;
}
pen = 0;
if (brushOld) {
::SelectObject(reinterpret_cast<HDC>(hdc), brushOld);
::DeleteObject(brush);
brushOld = 0;
}
brush = 0;
if (fontOld) {
// Fonts are not deleted as they are owned by a Font object
::SelectObject(reinterpret_cast<HDC>(hdc), fontOld);
fontOld = 0;
}
font = 0;
if (bitmapOld) {
::SelectObject(reinterpret_cast<HDC>(hdc), bitmapOld);
::DeleteObject(bitmap);
bitmapOld = 0;
}
bitmap = 0;
if (hdcOwned) {
::DeleteDC(reinterpret_cast<HDC>(hdc));
hdc = 0;
hdcOwned = false;
}
}
bool SurfaceGDI::Initialised() {
return hdc != 0;
}
void SurfaceGDI::Init(WindowID) {
Release();
hdc = ::CreateCompatibleDC(NULL);
hdcOwned = true;
::SetTextAlign(reinterpret_cast<HDC>(hdc), TA_BASELINE);
}
void SurfaceGDI::Init(SurfaceID sid, WindowID) {
Release();
hdc = reinterpret_cast<HDC>(sid);
::SetTextAlign(reinterpret_cast<HDC>(hdc), TA_BASELINE);
}
void SurfaceGDI::InitPixMap(int width, int height, Surface *surface_, WindowID) {
Release();
hdc = ::CreateCompatibleDC(static_cast<SurfaceGDI *>(surface_)->hdc);
hdcOwned = true;
bitmap = ::CreateCompatibleBitmap(static_cast<SurfaceGDI *>(surface_)->hdc, width, height);
bitmapOld = static_cast<HBITMAP>(::SelectObject(hdc, bitmap));
::SetTextAlign(reinterpret_cast<HDC>(hdc), TA_BASELINE);
}
void SurfaceGDI::PenColour(ColourDesired fore) {
if (pen) {
::SelectObject(hdc, penOld);
::DeleteObject(pen);
pen = 0;
penOld = 0;
}
pen = ::CreatePen(0,1,fore.AsLong());
penOld = static_cast<HPEN>(::SelectObject(reinterpret_cast<HDC>(hdc), pen));
}
void SurfaceGDI::BrushColor(ColourDesired back) {
if (brush) {
::SelectObject(hdc, brushOld);
::DeleteObject(brush);
brush = 0;
brushOld = 0;
}
// Only ever want pure, non-dithered brushes
ColourDesired colourNearest = ::GetNearestColor(hdc, back.AsLong());
brush = ::CreateSolidBrush(colourNearest.AsLong());
brushOld = static_cast<HBRUSH>(::SelectObject(hdc, brush));
}
void SurfaceGDI::SetFont(Font &font_) {
if (font_.GetID() != font) {
FormatAndMetrics *pfm = reinterpret_cast<FormatAndMetrics *>(font_.GetID());
PLATFORM_ASSERT(pfm->technology == SCWIN_TECH_GDI);
if (fontOld) {
::SelectObject(hdc, pfm->hfont);
} else {
fontOld = static_cast<HFONT>(::SelectObject(hdc, pfm->hfont));
}
font = reinterpret_cast<HFONT>(pfm->hfont);
}
}
int SurfaceGDI::LogPixelsY() {
return ::GetDeviceCaps(hdc, LOGPIXELSY);
}
int SurfaceGDI::DeviceHeightFont(int points) {
return ::MulDiv(points, LogPixelsY(), 72);
}
void SurfaceGDI::MoveTo(int x_, int y_) {
::MoveToEx(hdc, x_, y_, 0);
}
void SurfaceGDI::LineTo(int x_, int y_) {
::LineTo(hdc, x_, y_);
}
void SurfaceGDI::Polygon(Point *pts, int npts, ColourDesired fore, ColourDesired back) {
PenColour(fore);
BrushColor(back);
std::vector<POINT> outline;
for (int i=0;i<npts;i++) {
POINT pt = {static_cast<LONG>(pts[i].x), static_cast<LONG>(pts[i].y)};
outline.push_back(pt);
}
::Polygon(hdc, &outline[0], npts);
}
void SurfaceGDI::RectangleDraw(PRectangle rc, ColourDesired fore, ColourDesired back) {
PenColour(fore);
BrushColor(back);
::Rectangle(hdc, rc.left, rc.top, rc.right, rc.bottom);
}
void SurfaceGDI::FillRectangle(PRectangle rc, ColourDesired back) {
// Using ExtTextOut rather than a FillRect ensures that no dithering occurs.
// There is no need to allocate a brush either.
RECT rcw = RectFromPRectangle(rc);
::SetBkColor(hdc, back.AsLong());
::ExtTextOut(hdc, rc.left, rc.top, ETO_OPAQUE, &rcw, TEXT(""), 0, NULL);
}
void SurfaceGDI::FillRectangle(PRectangle rc, Surface &surfacePattern) {
HBRUSH br;
if (static_cast<SurfaceGDI &>(surfacePattern).bitmap)
br = ::CreatePatternBrush(static_cast<SurfaceGDI &>(surfacePattern).bitmap);
else // Something is wrong so display in red
br = ::CreateSolidBrush(RGB(0xff, 0, 0));
RECT rcw = RectFromPRectangle(rc);
::FillRect(hdc, &rcw, br);
::DeleteObject(br);
}
void SurfaceGDI::RoundedRectangle(PRectangle rc, ColourDesired fore, ColourDesired back) {
PenColour(fore);
BrushColor(back);
::RoundRect(hdc,
rc.left + 1, rc.top,
rc.right - 1, rc.bottom,
8, 8);
}
// Plot a point into a DWORD buffer symetrically to all 4 qudrants
static void AllFour(DWORD *pixels, int width, int height, int x, int y, DWORD val) {
pixels[y*width+x] = val;
pixels[y*width+width-1-x] = val;
pixels[(height-1-y)*width+x] = val;
pixels[(height-1-y)*width+width-1-x] = val;
}
#ifndef AC_SRC_OVER
#define AC_SRC_OVER 0x00
#endif
#ifndef AC_SRC_ALPHA
#define AC_SRC_ALPHA 0x01
#endif
static DWORD dwordFromBGRA(byte b, byte g, byte r, byte a) {
union {
byte pixVal[4];
DWORD val;
} converter;
converter.pixVal[0] = b;
converter.pixVal[1] = g;
converter.pixVal[2] = r;
converter.pixVal[3] = a;
return converter.val;
}
void SurfaceGDI::AlphaRectangle(PRectangle rc, int cornerSize, ColourDesired fill, int alphaFill,
ColourDesired outline, int alphaOutline, int /* flags*/ ) {
if (AlphaBlendFn && rc.Width() > 0) {
HDC hMemDC = ::CreateCompatibleDC(reinterpret_cast<HDC>(hdc));
int width = rc.Width();
int height = rc.Height();
// Ensure not distorted too much by corners when small
cornerSize = Platform::Minimum(cornerSize, (Platform::Minimum(width, height) / 2) - 2);
BITMAPINFO bpih = {sizeof(BITMAPINFOHEADER), width, height, 1, 32, BI_RGB, 0, 0, 0, 0, 0};
void *image = 0;
HBITMAP hbmMem = CreateDIBSection(reinterpret_cast<HDC>(hMemDC), &bpih,
DIB_RGB_COLORS, &image, NULL, 0);
if (hbmMem) {
HBITMAP hbmOld = SelectBitmap(hMemDC, hbmMem);
DWORD valEmpty = dwordFromBGRA(0,0,0,0);
DWORD valFill = dwordFromBGRA(
static_cast<byte>(GetBValue(fill.AsLong()) * alphaFill / 255),
static_cast<byte>(GetGValue(fill.AsLong()) * alphaFill / 255),
static_cast<byte>(GetRValue(fill.AsLong()) * alphaFill / 255),
static_cast<byte>(alphaFill));
DWORD valOutline = dwordFromBGRA(
static_cast<byte>(GetBValue(outline.AsLong()) * alphaOutline / 255),
static_cast<byte>(GetGValue(outline.AsLong()) * alphaOutline / 255),
static_cast<byte>(GetRValue(outline.AsLong()) * alphaOutline / 255),
static_cast<byte>(alphaOutline));
DWORD *pixels = reinterpret_cast<DWORD *>(image);
for (int y=0; y<height; y++) {
for (int x=0; x<width; x++) {
if ((x==0) || (x==width-1) || (y == 0) || (y == height-1)) {
pixels[y*width+x] = valOutline;
} else {
pixels[y*width+x] = valFill;
}
}
}
for (int c=0;c<cornerSize; c++) {
for (int x=0;x<c+1; x++) {
AllFour(pixels, width, height, x, c-x, valEmpty);
}
}
for (int x=1;x<cornerSize; x++) {
AllFour(pixels, width, height, x, cornerSize-x, valOutline);
}
BLENDFUNCTION merge = { AC_SRC_OVER, 0, 255, AC_SRC_ALPHA };
AlphaBlendFn(reinterpret_cast<HDC>(hdc), rc.left, rc.top, width, height, hMemDC, 0, 0, width, height, merge);
SelectBitmap(hMemDC, hbmOld);
::DeleteObject(hbmMem);
}
::DeleteDC(hMemDC);
} else {
BrushColor(outline);
RECT rcw = RectFromPRectangle(rc);
FrameRect(hdc, &rcw, brush);
}
}
void SurfaceGDI::DrawRGBAImage(PRectangle rc, int width, int height, const unsigned char *pixelsImage) {
if (AlphaBlendFn && rc.Width() > 0) {
HDC hMemDC = ::CreateCompatibleDC(reinterpret_cast<HDC>(hdc));
if (rc.Width() > width)
rc.left += static_cast<int>((rc.Width() - width) / 2);
rc.right = rc.left + width;
if (rc.Height() > height)
rc.top += static_cast<int>((rc.Height() - height) / 2);
rc.bottom = rc.top + height;
BITMAPINFO bpih = {sizeof(BITMAPINFOHEADER), width, height, 1, 32, BI_RGB, 0, 0, 0, 0, 0};
unsigned char *image = 0;
HBITMAP hbmMem = CreateDIBSection(reinterpret_cast<HDC>(hMemDC), &bpih,
DIB_RGB_COLORS, reinterpret_cast<void **>(&image), NULL, 0);
if (hbmMem) {
HBITMAP hbmOld = SelectBitmap(hMemDC, hbmMem);
for (int y=height-1; y>=0; y--) {
for (int x=0; x<width; x++) {
unsigned char *pixel = image + (y*width+x) * 4;
unsigned char alpha = pixelsImage[3];
// Input is RGBA, output is BGRA with premultiplied alpha
pixel[2] = static_cast<unsigned char>((*pixelsImage++) * alpha / 255);
pixel[1] = static_cast<unsigned char>((*pixelsImage++) * alpha / 255);
pixel[0] = static_cast<unsigned char>((*pixelsImage++) * alpha / 255);
pixel[3] = static_cast<unsigned char>(*pixelsImage++);
}
}
BLENDFUNCTION merge = { AC_SRC_OVER, 0, 255, AC_SRC_ALPHA };
AlphaBlendFn(reinterpret_cast<HDC>(hdc), rc.left, rc.top, rc.Width(), rc.Height(), hMemDC, 0, 0, width, height, merge);
SelectBitmap(hMemDC, hbmOld);
::DeleteObject(hbmMem);
}
::DeleteDC(hMemDC);
}
}
void SurfaceGDI::Ellipse(PRectangle rc, ColourDesired fore, ColourDesired back) {
PenColour(fore);
BrushColor(back);
::Ellipse(hdc, rc.left, rc.top, rc.right, rc.bottom);
}
void SurfaceGDI::Copy(PRectangle rc, Point from, Surface &surfaceSource) {
::BitBlt(hdc,
rc.left, rc.top, rc.Width(), rc.Height(),
static_cast<SurfaceGDI &>(surfaceSource).hdc, from.x, from.y, SRCCOPY);
}
typedef VarBuffer<int, stackBufferLength> TextPositionsI;
void SurfaceGDI::DrawTextCommon(PRectangle rc, Font &font_, XYPOSITION ybase, const char *s, int len, UINT fuOptions) {
SetFont(font_);
RECT rcw = RectFromPRectangle(rc);
SIZE sz={0,0};
int pos = 0;
int x = rc.left;
// Text drawing may fail if the text is too big.
// If it does fail, slice up into segments and draw each segment.
const int maxSegmentLength = 0x200;
if ((!unicodeMode) && (IsNT() || (codePage==0) || win9xACPSame)) {
// Use ANSI calls
int lenDraw = Platform::Minimum(len, maxLenText);
if (!::ExtTextOutA(hdc, x, ybase, fuOptions, &rcw, s, lenDraw, NULL)) {
while (lenDraw > pos) {
int seglen = Platform::Minimum(maxSegmentLength, lenDraw - pos);
if (!::ExtTextOutA(hdc, x, ybase, fuOptions, &rcw, s+pos, seglen, NULL)) {
PLATFORM_ASSERT(false);
return;
}
::GetTextExtentPoint32A(hdc, s+pos, seglen, &sz);
x += sz.cx;
pos += seglen;
}
}
} else {
// Use Unicode calls
const TextWide tbuf(s, len, unicodeMode, codePage);
if (!::ExtTextOutW(hdc, x, ybase, fuOptions, &rcw, tbuf.buffer, tbuf.tlen, NULL)) {
while (tbuf.tlen > pos) {
int seglen = Platform::Minimum(maxSegmentLength, tbuf.tlen - pos);
if (!::ExtTextOutW(hdc, x, ybase, fuOptions, &rcw, tbuf.buffer+pos, seglen, NULL)) {
PLATFORM_ASSERT(false);
return;
}
::GetTextExtentPoint32W(hdc, tbuf.buffer+pos, seglen, &sz);
x += sz.cx;
pos += seglen;
}
}
}
}
void SurfaceGDI::DrawTextNoClip(PRectangle rc, Font &font_, XYPOSITION ybase, const char *s, int len,
ColourDesired fore, ColourDesired back) {
::SetTextColor(hdc, fore.AsLong());
::SetBkColor(hdc, back.AsLong());
DrawTextCommon(rc, font_, ybase, s, len, ETO_OPAQUE);
}
void SurfaceGDI::DrawTextClipped(PRectangle rc, Font &font_, XYPOSITION ybase, const char *s, int len,
ColourDesired fore, ColourDesired back) {
::SetTextColor(hdc, fore.AsLong());
::SetBkColor(hdc, back.AsLong());
DrawTextCommon(rc, font_, ybase, s, len, ETO_OPAQUE | ETO_CLIPPED);
}
void SurfaceGDI::DrawTextTransparent(PRectangle rc, Font &font_, XYPOSITION ybase, const char *s, int len,
ColourDesired fore) {
// Avoid drawing spaces in transparent mode
for (int i=0;i<len;i++) {
if (s[i] != ' ') {
::SetTextColor(hdc, fore.AsLong());
::SetBkMode(hdc, TRANSPARENT);
DrawTextCommon(rc, font_, ybase, s, len, 0);
::SetBkMode(hdc, OPAQUE);
return;
}
}
}
XYPOSITION SurfaceGDI::WidthText(Font &font_, const char *s, int len) {
SetFont(font_);
SIZE sz={0,0};
if ((!unicodeMode) && (IsNT() || (codePage==0) || win9xACPSame)) {
::GetTextExtentPoint32A(hdc, s, Platform::Minimum(len, maxLenText), &sz);
} else {
const TextWide tbuf(s, len, unicodeMode, codePage);
::GetTextExtentPoint32W(hdc, tbuf.buffer, tbuf.tlen, &sz);
}
return sz.cx;
}
void SurfaceGDI::MeasureWidths(Font &font_, const char *s, int len, XYPOSITION *positions) {
SetFont(font_);
SIZE sz={0,0};
int fit = 0;
if (unicodeMode) {
const TextWide tbuf(s, len, unicodeMode, codePage);
TextPositionsI poses(tbuf.tlen);
fit = tbuf.tlen;
if (!::GetTextExtentExPointW(hdc, tbuf.buffer, tbuf.tlen, maxWidthMeasure, &fit, poses.buffer, &sz)) {
// Likely to have failed because on Windows 9x where function not available
// So measure the character widths by measuring each initial substring
// Turns a linear operation into a qudratic but seems fast enough on test files
for (int widthSS=0; widthSS < tbuf.tlen; widthSS++) {
::GetTextExtentPoint32W(hdc, tbuf.buffer, widthSS+1, &sz);
poses.buffer[widthSS] = sz.cx;
}
}
// Map the widths given for UTF-16 characters back onto the UTF-8 input string
int ui=0;
const unsigned char *us = reinterpret_cast<const unsigned char *>(s);
int i=0;
while (ui<fit) {
unsigned char uch = us[i];
unsigned int lenChar = 1;
if (uch >= (0x80 + 0x40 + 0x20 + 0x10)) {
lenChar = 4;
ui++;
} else if (uch >= (0x80 + 0x40 + 0x20)) {
lenChar = 3;
} else if (uch >= (0x80)) {
lenChar = 2;
}
for (unsigned int bytePos=0; (bytePos<lenChar) && (i<len); bytePos++) {
positions[i++] = poses.buffer[ui];
}
ui++;
}
int lastPos = 0;
if (i > 0)
lastPos = positions[i-1];
while (i<len) {
positions[i++] = lastPos;
}
} else if (IsNT() || (codePage==0) || win9xACPSame) {
// Zero positions to avoid random behaviour on failure.
memset(positions, 0, len * sizeof(*positions));
// len may be larger than platform supports so loop over segments small enough for platform
int startOffset = 0;
while (len > 0) {
int lenBlock = Platform::Minimum(len, maxLenText);
TextPositionsI poses(len);
if (!::GetTextExtentExPointA(hdc, s, lenBlock, maxWidthMeasure, &fit, poses.buffer, &sz)) {
// Eeek - a NULL DC or other foolishness could cause this.
return;
} else if (fit < lenBlock) {
// For some reason, such as an incomplete DBCS character
// Not all the positions are filled in so make them equal to end.
if (fit == 0)
poses.buffer[fit++] = 0;
for (int i = fit;i<lenBlock;i++)
poses.buffer[i] = poses.buffer[fit-1];
}
for (int i=0;i<lenBlock;i++)
positions[i] = poses.buffer[i] + startOffset;
startOffset = poses.buffer[lenBlock-1];
len -= lenBlock;
positions += lenBlock;
s += lenBlock;
}
} else {
// Support Asian string display in 9x English
const TextWide tbuf(s, len, unicodeMode, codePage);
TextPositionsI poses(tbuf.tlen);
for (int widthSS=0; widthSS<tbuf.tlen; widthSS++) {
::GetTextExtentPoint32W(hdc, tbuf.buffer, widthSS+1, &sz);
poses.buffer[widthSS] = sz.cx;
}
int ui = 0;
for (int i=0;i<len;) {
if (Platform::IsDBCSLeadByte(codePage, s[i])) {
positions[i] = poses.buffer[ui];
positions[i+1] = poses.buffer[ui];
i += 2;
} else {
positions[i] = poses.buffer[ui];
i++;
}
ui++;
}
}
}
XYPOSITION SurfaceGDI::WidthChar(Font &font_, char ch) {
SetFont(font_);
SIZE sz;
::GetTextExtentPoint32A(hdc, &ch, 1, &sz);
return sz.cx;
}
XYPOSITION SurfaceGDI::Ascent(Font &font_) {
SetFont(font_);
TEXTMETRIC tm;
::GetTextMetrics(hdc, &tm);
return tm.tmAscent;
}
XYPOSITION SurfaceGDI::Descent(Font &font_) {
SetFont(font_);
TEXTMETRIC tm;
::GetTextMetrics(hdc, &tm);
return tm.tmDescent;
}
XYPOSITION SurfaceGDI::InternalLeading(Font &font_) {
SetFont(font_);
TEXTMETRIC tm;
::GetTextMetrics(hdc, &tm);
return tm.tmInternalLeading;
}
XYPOSITION SurfaceGDI::ExternalLeading(Font &font_) {
SetFont(font_);
TEXTMETRIC tm;
::GetTextMetrics(hdc, &tm);
return tm.tmExternalLeading;
}
XYPOSITION SurfaceGDI::Height(Font &font_) {
SetFont(font_);
TEXTMETRIC tm;
::GetTextMetrics(hdc, &tm);
return tm.tmHeight;
}
XYPOSITION SurfaceGDI::AverageCharWidth(Font &font_) {
SetFont(font_);
TEXTMETRIC tm;
::GetTextMetrics(hdc, &tm);
return tm.tmAveCharWidth;
}
void SurfaceGDI::SetClip(PRectangle rc) {
::IntersectClipRect(hdc, rc.left, rc.top, rc.right, rc.bottom);
}
void SurfaceGDI::FlushCachedState() {
pen = 0;
brush = 0;
font = 0;
}
void SurfaceGDI::SetUnicodeMode(bool unicodeMode_) {
unicodeMode=unicodeMode_;
}
void SurfaceGDI::SetDBCSMode(int codePage_) {
// No action on window as automatically handled by system.
codePage = codePage_;
win9xACPSame = !IsNT() && ((unsigned int)codePage == ::GetACP());
}
#if defined(USE_D2D)
#ifdef SCI_NAMESPACE
namespace Scintilla {
#endif
class SurfaceD2D : public Surface {
bool unicodeMode;
int x, y;
int codePage;
int codePageText;
ID2D1RenderTarget *pRenderTarget;
bool ownRenderTarget;
int clipsActive;
IDWriteTextFormat *pTextFormat;
FLOAT yAscent;
FLOAT yDescent;
FLOAT yInternalLeading;
ID2D1SolidColorBrush *pBrush;
int logPixelsY;
float dpiScaleX;
float dpiScaleY;
void SetFont(Font &font_);
// Private so SurfaceD2D objects can not be copied
SurfaceD2D(const SurfaceD2D &);
SurfaceD2D &operator=(const SurfaceD2D &);
public:
SurfaceD2D();
virtual ~SurfaceD2D();
void SetScale();
void Init(WindowID wid);
void Init(SurfaceID sid, WindowID wid);
void InitPixMap(int width, int height, Surface *surface_, WindowID wid);
void Release();
bool Initialised();
HRESULT FlushDrawing();
void PenColour(ColourDesired fore);
void D2DPenColour(ColourDesired fore, int alpha=255);
int LogPixelsY();
int DeviceHeightFont(int points);
void MoveTo(int x_, int y_);
void LineTo(int x_, int y_);
void Polygon(Point *pts, int npts, ColourDesired fore, ColourDesired back);
void RectangleDraw(PRectangle rc, ColourDesired fore, ColourDesired back);
void FillRectangle(PRectangle rc, ColourDesired back);
void FillRectangle(PRectangle rc, Surface &surfacePattern);
void RoundedRectangle(PRectangle rc, ColourDesired fore, ColourDesired back);
void AlphaRectangle(PRectangle rc, int cornerSize, ColourDesired fill, int alphaFill,
ColourDesired outline, int alphaOutline, int flags);
void DrawRGBAImage(PRectangle rc, int width, int height, const unsigned char *pixelsImage);
void Ellipse(PRectangle rc, ColourDesired fore, ColourDesired back);
void Copy(PRectangle rc, Point from, Surface &surfaceSource);
void DrawTextCommon(PRectangle rc, Font &font_, XYPOSITION ybase, const char *s, int len, UINT fuOptions);
void DrawTextNoClip(PRectangle rc, Font &font_, XYPOSITION ybase, const char *s, int len, ColourDesired fore, ColourDesired back);
void DrawTextClipped(PRectangle rc, Font &font_, XYPOSITION ybase, const char *s, int len, ColourDesired fore, ColourDesired back);
void DrawTextTransparent(PRectangle rc, Font &font_, XYPOSITION ybase, const char *s, int len, ColourDesired fore);
void MeasureWidths(Font &font_, const char *s, int len, XYPOSITION *positions);
XYPOSITION WidthText(Font &font_, const char *s, int len);
XYPOSITION WidthChar(Font &font_, char ch);
XYPOSITION Ascent(Font &font_);
XYPOSITION Descent(Font &font_);
XYPOSITION InternalLeading(Font &font_);
XYPOSITION ExternalLeading(Font &font_);
XYPOSITION Height(Font &font_);
XYPOSITION AverageCharWidth(Font &font_);
void SetClip(PRectangle rc);
void FlushCachedState();
void SetUnicodeMode(bool unicodeMode_);
void SetDBCSMode(int codePage_);
};
#ifdef SCI_NAMESPACE
} //namespace Scintilla
#endif
SurfaceD2D::SurfaceD2D() :
unicodeMode(false),
x(0), y(0) {
codePage = 0;
codePageText = 0;
pRenderTarget = NULL;
ownRenderTarget = false;
clipsActive = 0;
// From selected font
pTextFormat = NULL;
yAscent = 2;
yDescent = 1;
yInternalLeading = 0;
pBrush = NULL;
logPixelsY = 72;
dpiScaleX = 1.0;
dpiScaleY = 1.0;
}
SurfaceD2D::~SurfaceD2D() {
Release();
}
void SurfaceD2D::Release() {
if (pBrush) {
pBrush->Release();
pBrush = 0;
}
if (pRenderTarget) {
while (clipsActive) {
pRenderTarget->PopAxisAlignedClip();
clipsActive--;
}
if (ownRenderTarget) {
pRenderTarget->Release();
}
pRenderTarget = 0;
}
}
void SurfaceD2D::SetScale() {
HDC hdcMeasure = ::CreateCompatibleDC(NULL);
logPixelsY = ::GetDeviceCaps(hdcMeasure, LOGPIXELSY);
dpiScaleX = ::GetDeviceCaps(hdcMeasure, LOGPIXELSX) / 96.0f;
dpiScaleY = logPixelsY / 96.0f;
::DeleteDC(hdcMeasure);
}
bool SurfaceD2D::Initialised() {
return pRenderTarget != 0;
}
HRESULT SurfaceD2D::FlushDrawing() {
return pRenderTarget->Flush();
}
void SurfaceD2D::Init(WindowID /* wid */) {
Release();
SetScale();
}
void SurfaceD2D::Init(SurfaceID sid, WindowID) {
Release();
SetScale();
pRenderTarget = reinterpret_cast<ID2D1RenderTarget *>(sid);
}
void SurfaceD2D::InitPixMap(int width, int height, Surface *surface_, WindowID) {
Release();
SetScale();
SurfaceD2D *psurfOther = static_cast<SurfaceD2D *>(surface_);
ID2D1BitmapRenderTarget *pCompatibleRenderTarget = NULL;
D2D1_SIZE_F desiredSize = D2D1::SizeF(width, height);
D2D1_PIXEL_FORMAT desiredFormat = psurfOther->pRenderTarget->GetPixelFormat();
desiredFormat.alphaMode = D2D1_ALPHA_MODE_IGNORE;
HRESULT hr = psurfOther->pRenderTarget->CreateCompatibleRenderTarget(
&desiredSize, NULL, &desiredFormat, D2D1_COMPATIBLE_RENDER_TARGET_OPTIONS_NONE, &pCompatibleRenderTarget);
if (SUCCEEDED(hr)) {
pRenderTarget = pCompatibleRenderTarget;
pRenderTarget->BeginDraw();
ownRenderTarget = true;
}
}
void SurfaceD2D::PenColour(ColourDesired fore) {
D2DPenColour(fore);
}
void SurfaceD2D::D2DPenColour(ColourDesired fore, int alpha) {
if (pRenderTarget) {
D2D_COLOR_F col;
col.r = (fore.AsLong() & 0xff) / 255.0;
col.g = ((fore.AsLong() & 0xff00) >> 8) / 255.0;
col.b = (fore.AsLong() >> 16) / 255.0;
col.a = alpha / 255.0;
if (pBrush) {
pBrush->SetColor(col);
} else {
HRESULT hr = pRenderTarget->CreateSolidColorBrush(col, &pBrush);
if (!SUCCEEDED(hr) && pBrush) {
pBrush->Release();
pBrush = 0;
}
}
}
}
void SurfaceD2D::SetFont(Font &font_) {
FormatAndMetrics *pfm = reinterpret_cast<FormatAndMetrics *>(font_.GetID());
PLATFORM_ASSERT(pfm->technology == SCWIN_TECH_DIRECTWRITE);
pTextFormat = pfm->pTextFormat;
yAscent = pfm->yAscent;
yDescent = pfm->yDescent;
yInternalLeading = pfm->yInternalLeading;
codePageText = codePage;
if (pfm->characterSet) {
codePageText = CodePageFromCharSet(pfm->characterSet, codePage);
}
if (pRenderTarget) {
pRenderTarget->SetTextAntialiasMode(DWriteMapFontQuality(pfm->extraFontFlag));
}
}
int SurfaceD2D::LogPixelsY() {
return logPixelsY;
}
int SurfaceD2D::DeviceHeightFont(int points) {
return ::MulDiv(points, LogPixelsY(), 72);
}
void SurfaceD2D::MoveTo(int x_, int y_) {
x = x_;
y = y_;
}
static int Delta(int difference) {
if (difference < 0)
return -1;
else if (difference > 0)
return 1;
else
return 0;
}
static int RoundFloat(float f) {
return int(f+0.5);
}
void SurfaceD2D::LineTo(int x_, int y_) {
if (pRenderTarget) {
int xDiff = x_ - x;
int xDelta = Delta(xDiff);
int yDiff = y_ - y;
int yDelta = Delta(yDiff);
if ((xDiff == 0) || (yDiff == 0)) {
// Horizontal or vertical lines can be more precisely drawn as a filled rectangle
int xEnd = x_ - xDelta;
int left = Platform::Minimum(x, xEnd);
int width = abs(x - xEnd) + 1;
int yEnd = y_ - yDelta;
int top = Platform::Minimum(y, yEnd);
int height = abs(y - yEnd) + 1;
D2D1_RECT_F rectangle1 = D2D1::RectF(left, top, left+width, top+height);
pRenderTarget->FillRectangle(&rectangle1, pBrush);
} else if ((abs(xDiff) == abs(yDiff))) {
// 45 degree slope
pRenderTarget->DrawLine(D2D1::Point2F(x + 0.5, y + 0.5),
D2D1::Point2F(x_ + 0.5 - xDelta, y_ + 0.5 - yDelta), pBrush);
} else {
// Line has a different slope so difficult to avoid last pixel
pRenderTarget->DrawLine(D2D1::Point2F(x + 0.5, y + 0.5),
D2D1::Point2F(x_ + 0.5, y_ + 0.5), pBrush);
}
x = x_;
y = y_;
}
}
void SurfaceD2D::Polygon(Point *pts, int npts, ColourDesired fore, ColourDesired back) {
if (pRenderTarget) {
ID2D1Factory *pFactory = 0;
pRenderTarget->GetFactory(&pFactory);
ID2D1PathGeometry *geometry=0;
HRESULT hr = pFactory->CreatePathGeometry(&geometry);
if (SUCCEEDED(hr)) {
ID2D1GeometrySink *sink = 0;
hr = geometry->Open(&sink);
if (SUCCEEDED(hr)) {
sink->BeginFigure(D2D1::Point2F(pts[0].x + 0.5f, pts[0].y + 0.5f), D2D1_FIGURE_BEGIN_FILLED);
for (size_t i=1; i<static_cast<size_t>(npts); i++) {
sink->AddLine(D2D1::Point2F(pts[i].x + 0.5f, pts[i].y + 0.5f));
}
sink->EndFigure(D2D1_FIGURE_END_CLOSED);
sink->Close();
sink->Release();
D2DPenColour(back);
pRenderTarget->FillGeometry(geometry,pBrush);
D2DPenColour(fore);
pRenderTarget->DrawGeometry(geometry,pBrush);
}
geometry->Release();
}
}
}
void SurfaceD2D::RectangleDraw(PRectangle rc, ColourDesired fore, ColourDesired back) {
if (pRenderTarget) {
D2D1_RECT_F rectangle1 = D2D1::RectF(RoundFloat(rc.left) + 0.5, rc.top+0.5, RoundFloat(rc.right) - 0.5, rc.bottom-0.5);
D2DPenColour(back);
pRenderTarget->FillRectangle(&rectangle1, pBrush);
D2DPenColour(fore);
pRenderTarget->DrawRectangle(&rectangle1, pBrush);
}
}
void SurfaceD2D::FillRectangle(PRectangle rc, ColourDesired back) {
if (pRenderTarget) {
D2DPenColour(back);
D2D1_RECT_F rectangle1 = D2D1::RectF(RoundFloat(rc.left), rc.top, RoundFloat(rc.right), rc.bottom);
pRenderTarget->FillRectangle(&rectangle1, pBrush);
}
}
void SurfaceD2D::FillRectangle(PRectangle rc, Surface &surfacePattern) {
SurfaceD2D &surfOther = static_cast<SurfaceD2D &>(surfacePattern);
surfOther.FlushDrawing();
ID2D1Bitmap *pBitmap = NULL;
ID2D1BitmapRenderTarget *pCompatibleRenderTarget = reinterpret_cast<ID2D1BitmapRenderTarget *>(
surfOther.pRenderTarget);
HRESULT hr = pCompatibleRenderTarget->GetBitmap(&pBitmap);
if (SUCCEEDED(hr)) {
ID2D1BitmapBrush *pBitmapBrush = NULL;
D2D1_BITMAP_BRUSH_PROPERTIES brushProperties =
D2D1::BitmapBrushProperties(D2D1_EXTEND_MODE_WRAP, D2D1_EXTEND_MODE_WRAP,
D2D1_BITMAP_INTERPOLATION_MODE_NEAREST_NEIGHBOR);
// Create the bitmap brush.
hr = pRenderTarget->CreateBitmapBrush(pBitmap, brushProperties, &pBitmapBrush);
pBitmap->Release();
if (SUCCEEDED(hr)) {
pRenderTarget->FillRectangle(
D2D1::RectF(rc.left, rc.top, rc.right, rc.bottom),
pBitmapBrush);
pBitmapBrush->Release();
}
}
}
void SurfaceD2D::RoundedRectangle(PRectangle rc, ColourDesired fore, ColourDesired back) {
if (pRenderTarget) {
D2D1_ROUNDED_RECT roundedRectFill = D2D1::RoundedRect(
D2D1::RectF(rc.left+1.0, rc.top+1.0, rc.right-1.0, rc.bottom-1.0),
8, 8);
D2DPenColour(back);
pRenderTarget->FillRoundedRectangle(roundedRectFill, pBrush);
D2D1_ROUNDED_RECT roundedRect = D2D1::RoundedRect(
D2D1::RectF(rc.left + 0.5, rc.top+0.5, rc.right - 0.5, rc.bottom-0.5),
8, 8);
D2DPenColour(fore);
pRenderTarget->DrawRoundedRectangle(roundedRect, pBrush);
}
}
void SurfaceD2D::AlphaRectangle(PRectangle rc, int cornerSize, ColourDesired fill, int alphaFill,
ColourDesired outline, int alphaOutline, int /* flags*/ ) {
if (pRenderTarget) {
if (cornerSize == 0) {
// When corner size is zero, draw square rectangle to prevent blurry pixels at corners
D2D1_RECT_F rectFill = D2D1::RectF(RoundFloat(rc.left) + 1.0, rc.top + 1.0, RoundFloat(rc.right) - 1.0, rc.bottom - 1.0);
D2DPenColour(fill, alphaFill);
pRenderTarget->FillRectangle(rectFill, pBrush);
D2D1_RECT_F rectOutline = D2D1::RectF(RoundFloat(rc.left) + 0.5, rc.top + 0.5, RoundFloat(rc.right) - 0.5, rc.bottom - 0.5);
D2DPenColour(outline, alphaOutline);
pRenderTarget->DrawRectangle(rectOutline, pBrush);
} else {
D2D1_ROUNDED_RECT roundedRectFill = D2D1::RoundedRect(
D2D1::RectF(RoundFloat(rc.left) + 1.0, rc.top + 1.0, RoundFloat(rc.right) - 1.0, rc.bottom - 1.0),
cornerSize, cornerSize);
D2DPenColour(fill, alphaFill);
pRenderTarget->FillRoundedRectangle(roundedRectFill, pBrush);
D2D1_ROUNDED_RECT roundedRect = D2D1::RoundedRect(
D2D1::RectF(RoundFloat(rc.left) + 0.5, rc.top + 0.5, RoundFloat(rc.right) - 0.5, rc.bottom - 0.5),
cornerSize, cornerSize);
D2DPenColour(outline, alphaOutline);
pRenderTarget->DrawRoundedRectangle(roundedRect, pBrush);
}
}
}
void SurfaceD2D::DrawRGBAImage(PRectangle rc, int width, int height, const unsigned char *pixelsImage) {
if (pRenderTarget) {
if (rc.Width() > width)
rc.left += static_cast<int>((rc.Width() - width) / 2);
rc.right = rc.left + width;
if (rc.Height() > height)
rc.top += static_cast<int>((rc.Height() - height) / 2);
rc.bottom = rc.top + height;
std::vector<unsigned char> image(height * width * 4);
for (int y=0; y<height; y++) {
for (int x=0; x<width; x++) {
unsigned char *pixel = &image[0] + (y*width+x) * 4;
unsigned char alpha = pixelsImage[3];
// Input is RGBA, output is BGRA with premultiplied alpha
pixel[2] = (*pixelsImage++) * alpha / 255;
pixel[1] = (*pixelsImage++) * alpha / 255;
pixel[0] = (*pixelsImage++) * alpha / 255;
pixel[3] = *pixelsImage++;
}
}
ID2D1Bitmap *bitmap = 0;
D2D1_SIZE_U size = D2D1::SizeU(width, height);
D2D1_BITMAP_PROPERTIES props = {{DXGI_FORMAT_B8G8R8A8_UNORM,
D2D1_ALPHA_MODE_PREMULTIPLIED}, 72.0, 72.0};
HRESULT hr = pRenderTarget->CreateBitmap(size, &image[0],
width * 4, &props, &bitmap);
if (SUCCEEDED(hr)) {
D2D1_RECT_F rcDestination = {rc.left, rc.top, rc.right, rc.bottom};
pRenderTarget->DrawBitmap(bitmap, rcDestination);
}
bitmap->Release();
}
}
void SurfaceD2D::Ellipse(PRectangle rc, ColourDesired fore, ColourDesired back) {
if (pRenderTarget) {
FLOAT radius = rc.Width() / 2.0f - 1.0f;
D2D1_ELLIPSE ellipse = D2D1::Ellipse(
D2D1::Point2F((rc.left + rc.right) / 2.0f, (rc.top + rc.bottom) / 2.0f),
radius,radius);
PenColour(back);
pRenderTarget->FillEllipse(ellipse, pBrush);
PenColour(fore);
pRenderTarget->DrawEllipse(ellipse, pBrush);
}
}
void SurfaceD2D::Copy(PRectangle rc, Point from, Surface &surfaceSource) {
SurfaceD2D &surfOther = static_cast<SurfaceD2D &>(surfaceSource);
surfOther.FlushDrawing();
ID2D1BitmapRenderTarget *pCompatibleRenderTarget = reinterpret_cast<ID2D1BitmapRenderTarget *>(
surfOther.pRenderTarget);
ID2D1Bitmap *pBitmap = NULL;
HRESULT hr = pCompatibleRenderTarget->GetBitmap(&pBitmap);
if (SUCCEEDED(hr)) {
D2D1_RECT_F rcDestination = {rc.left, rc.top, rc.right, rc.bottom};
D2D1_RECT_F rcSource = {from.x, from.y, from.x + rc.Width(), from.y + rc.Height()};
pRenderTarget->DrawBitmap(pBitmap, rcDestination, 1.0f,
D2D1_BITMAP_INTERPOLATION_MODE_NEAREST_NEIGHBOR, rcSource);
pRenderTarget->Flush();
pBitmap->Release();
}
}
void SurfaceD2D::DrawTextCommon(PRectangle rc, Font &font_, XYPOSITION ybase, const char *s, int len, UINT fuOptions) {
SetFont(font_);
// Use Unicode calls
const TextWide tbuf(s, len, unicodeMode, codePageText);
if (pRenderTarget && pTextFormat && pBrush) {
if (fuOptions & ETO_CLIPPED) {
D2D1_RECT_F rcClip = {rc.left, rc.top, rc.right, rc.bottom};
pRenderTarget->PushAxisAlignedClip(rcClip, D2D1_ANTIALIAS_MODE_ALIASED);
}
// Explicitly creating a text layout appears a little faster
IDWriteTextLayout *pTextLayout;
HRESULT hr = pIDWriteFactory->CreateTextLayout(tbuf.buffer, tbuf.tlen, pTextFormat,
rc.Width(), rc.Height(), &pTextLayout);
if (SUCCEEDED(hr)) {
D2D1_POINT_2F origin = {rc.left, ybase-yAscent};
pRenderTarget->DrawTextLayout(origin, pTextLayout, pBrush, D2D1_DRAW_TEXT_OPTIONS_NONE);
pTextLayout->Release();
}
if (fuOptions & ETO_CLIPPED) {
pRenderTarget->PopAxisAlignedClip();
}
}
}
void SurfaceD2D::DrawTextNoClip(PRectangle rc, Font &font_, XYPOSITION ybase, const char *s, int len,
ColourDesired fore, ColourDesired back) {
if (pRenderTarget) {
FillRectangle(rc, back);
D2DPenColour(fore);
DrawTextCommon(rc, font_, ybase, s, len, ETO_OPAQUE);
}
}
void SurfaceD2D::DrawTextClipped(PRectangle rc, Font &font_, XYPOSITION ybase, const char *s, int len,
ColourDesired fore, ColourDesired back) {
if (pRenderTarget) {
FillRectangle(rc, back);
D2DPenColour(fore);
DrawTextCommon(rc, font_, ybase, s, len, ETO_OPAQUE | ETO_CLIPPED);
}
}
void SurfaceD2D::DrawTextTransparent(PRectangle rc, Font &font_, XYPOSITION ybase, const char *s, int len,
ColourDesired fore) {
// Avoid drawing spaces in transparent mode
for (int i=0;i<len;i++) {
if (s[i] != ' ') {
if (pRenderTarget) {
D2DPenColour(fore);
DrawTextCommon(rc, font_, ybase, s, len, 0);
}
return;
}
}
}
XYPOSITION SurfaceD2D::WidthText(Font &font_, const char *s, int len) {
FLOAT width = 1.0;
SetFont(font_);
const TextWide tbuf(s, len, unicodeMode, codePageText);
if (pIDWriteFactory && pTextFormat) {
// Create a layout
IDWriteTextLayout *pTextLayout = 0;
HRESULT hr = pIDWriteFactory->CreateTextLayout(tbuf.buffer, tbuf.tlen, pTextFormat, 1000.0, 1000.0, &pTextLayout);
if (SUCCEEDED(hr)) {
DWRITE_TEXT_METRICS textMetrics;
pTextLayout->GetMetrics(&textMetrics);
width = textMetrics.widthIncludingTrailingWhitespace;
pTextLayout->Release();
}
}
return width;
}
void SurfaceD2D::MeasureWidths(Font &font_, const char *s, int len, XYPOSITION *positions) {
SetFont(font_);
int fit = 0;
const TextWide tbuf(s, len, unicodeMode, codePageText);
TextPositions poses(tbuf.tlen);
fit = tbuf.tlen;
const int clusters = 1000;
DWRITE_CLUSTER_METRICS clusterMetrics[clusters];
UINT32 count = 0;
if (pIDWriteFactory && pTextFormat) {
SetFont(font_);
// Create a layout
IDWriteTextLayout *pTextLayout = 0;
HRESULT hr = pIDWriteFactory->CreateTextLayout(tbuf.buffer, tbuf.tlen, pTextFormat, 10000.0, 1000.0, &pTextLayout);
if (!SUCCEEDED(hr))
return;
// For now, assuming WCHAR == cluster
pTextLayout->GetClusterMetrics(clusterMetrics, clusters, &count);
FLOAT position = 0.0f;
size_t ti=0;
for (size_t ci=0;ci<count;ci++) {
position += clusterMetrics[ci].width;
for (size_t inCluster=0; inCluster<clusterMetrics[ci].length; inCluster++) {
//poses.buffer[ti++] = int(position + 0.5);
poses.buffer[ti++] = position;
}
}
PLATFORM_ASSERT(ti == static_cast<size_t>(tbuf.tlen));
pTextLayout->Release();
}
if (unicodeMode) {
// Map the widths given for UTF-16 characters back onto the UTF-8 input string
int ui=0;
const unsigned char *us = reinterpret_cast<const unsigned char *>(s);
int i=0;
while (ui<fit) {
unsigned char uch = us[i];
unsigned int lenChar = 1;
if (uch >= (0x80 + 0x40 + 0x20 + 0x10)) {
lenChar = 4;
ui++;
} else if (uch >= (0x80 + 0x40 + 0x20)) {
lenChar = 3;
} else if (uch >= (0x80)) {
lenChar = 2;
}
for (unsigned int bytePos=0; (bytePos<lenChar) && (i<len); bytePos++) {
positions[i++] = poses.buffer[ui];
}
ui++;
}
int lastPos = 0;
if (i > 0)
lastPos = positions[i-1];
while (i<len) {
positions[i++] = lastPos;
}
} else if (codePageText == 0) {
// One character per position
PLATFORM_ASSERT(len == tbuf.tlen);
for (size_t kk=0;kk<static_cast<size_t>(len);kk++) {
positions[kk] = poses.buffer[kk];
}
} else {
// May be more than one byte per position
int ui = 0;
for (int i=0;i<len;) {
if (Platform::IsDBCSLeadByte(codePageText, s[i])) {
positions[i] = poses.buffer[ui];
positions[i+1] = poses.buffer[ui];
i += 2;
} else {
positions[i] = poses.buffer[ui];
i++;
}
ui++;
}
}
}
XYPOSITION SurfaceD2D::WidthChar(Font &font_, char ch) {
FLOAT width = 1.0;
SetFont(font_);
if (pIDWriteFactory && pTextFormat) {
// Create a layout
IDWriteTextLayout *pTextLayout = 0;
const WCHAR wch = ch;
HRESULT hr = pIDWriteFactory->CreateTextLayout(&wch, 1, pTextFormat, 1000.0, 1000.0, &pTextLayout);
if (SUCCEEDED(hr)) {
DWRITE_TEXT_METRICS textMetrics;
pTextLayout->GetMetrics(&textMetrics);
width = textMetrics.widthIncludingTrailingWhitespace;
pTextLayout->Release();
}
}
return width;
}
XYPOSITION SurfaceD2D::Ascent(Font &font_) {
SetFont(font_);
return ceil(yAscent);
}
XYPOSITION SurfaceD2D::Descent(Font &font_) {
SetFont(font_);
return ceil(yDescent);
}
XYPOSITION SurfaceD2D::InternalLeading(Font &font_) {
SetFont(font_);
return floor(yInternalLeading);
}
XYPOSITION SurfaceD2D::ExternalLeading(Font &) {
// Not implemented, always return one
return 1;
}
XYPOSITION SurfaceD2D::Height(Font &font_) {
return Ascent(font_) + Descent(font_);
}
XYPOSITION SurfaceD2D::AverageCharWidth(Font &font_) {
FLOAT width = 1.0;
SetFont(font_);
if (pIDWriteFactory && pTextFormat) {
// Create a layout
IDWriteTextLayout *pTextLayout = 0;
const WCHAR wszAllAlpha[] = L"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
HRESULT hr = pIDWriteFactory->CreateTextLayout(wszAllAlpha, static_cast<UINT32>(wcslen(wszAllAlpha)),
pTextFormat, 1000.0, 1000.0, &pTextLayout);
if (SUCCEEDED(hr)) {
DWRITE_TEXT_METRICS textMetrics;
pTextLayout->GetMetrics(&textMetrics);
width = textMetrics.width / wcslen(wszAllAlpha);
pTextLayout->Release();
}
}
return width;
}
void SurfaceD2D::SetClip(PRectangle rc) {
if (pRenderTarget) {
D2D1_RECT_F rcClip = {rc.left, rc.top, rc.right, rc.bottom};
pRenderTarget->PushAxisAlignedClip(rcClip, D2D1_ANTIALIAS_MODE_ALIASED);
clipsActive++;
}
}
void SurfaceD2D::FlushCachedState() {
}
void SurfaceD2D::SetUnicodeMode(bool unicodeMode_) {
unicodeMode=unicodeMode_;
}
void SurfaceD2D::SetDBCSMode(int codePage_) {
// No action on window as automatically handled by system.
codePage = codePage_;
}
#endif
Surface *Surface::Allocate(int technology) {
#if defined(USE_D2D)
if (technology == SCWIN_TECH_GDI)
return new SurfaceGDI;
else
return new SurfaceD2D;
#else
return new SurfaceGDI;
#endif
}
Window::~Window() {
}
void Window::Destroy() {
if (wid)
::DestroyWindow(reinterpret_cast<HWND>(wid));
wid = 0;
}
bool Window::HasFocus() {
return ::GetFocus() == wid;
}
PRectangle Window::GetPosition() {
RECT rc;
::GetWindowRect(reinterpret_cast<HWND>(wid), &rc);
return PRectangle(rc.left, rc.top, rc.right, rc.bottom);
}
void Window::SetPosition(PRectangle rc) {
::SetWindowPos(reinterpret_cast<HWND>(wid),
0, rc.left, rc.top, rc.Width(), rc.Height(), SWP_NOZORDER|SWP_NOACTIVATE);
}
static RECT RectFromMonitor(HMONITOR hMonitor) {
if (GetMonitorInfoFn) {
MONITORINFO mi = {0};
mi.cbSize = sizeof(mi);
if (GetMonitorInfoFn(hMonitor, &mi)) {
return mi.rcWork;
}
}
RECT rc = {0, 0, 0, 0};
::SystemParametersInfoA(SPI_GETWORKAREA, 0, &rc, 0);
return rc;
}
void Window::SetPositionRelative(PRectangle rc, Window w) {
LONG style = ::GetWindowLong(reinterpret_cast<HWND>(wid), GWL_STYLE);
if (style & WS_POPUP) {
POINT ptOther = {0, 0};
::ClientToScreen(reinterpret_cast<HWND>(w.GetID()), &ptOther);
rc.Move(ptOther.x, ptOther.y);
RECT rcMonitor = RectFromPRectangle(rc);
HMONITOR hMonitor = NULL;
if (MonitorFromRectFn)
hMonitor = MonitorFromRectFn(&rcMonitor, MONITOR_DEFAULTTONEAREST);
// If hMonitor is NULL, that's just the main screen anyways.
//::GetMonitorInfo(hMonitor, &mi);
RECT rcWork = RectFromMonitor(hMonitor);
if (rcWork.left < rcWork.right) {
// Now clamp our desired rectangle to fit inside the work area
// This way, the menu will fit wholly on one screen. An improvement even
// if you don't have a second monitor on the left... Menu's appears half on
// one screen and half on the other are just U.G.L.Y.!
if (rc.right > rcWork.right)
rc.Move(rcWork.right - rc.right, 0);
if (rc.bottom > rcWork.bottom)
rc.Move(0, rcWork.bottom - rc.bottom);
if (rc.left < rcWork.left)
rc.Move(rcWork.left - rc.left, 0);
if (rc.top < rcWork.top)
rc.Move(0, rcWork.top - rc.top);
}
}
SetPosition(rc);
}
PRectangle Window::GetClientPosition() {
RECT rc={0,0,0,0};
if (wid)
::GetClientRect(reinterpret_cast<HWND>(wid), &rc);
return PRectangle(rc.left, rc.top, rc.right, rc.bottom);
}
void Window::Show(bool show) {
if (show)
::ShowWindow(reinterpret_cast<HWND>(wid), SW_SHOWNOACTIVATE);
else
::ShowWindow(reinterpret_cast<HWND>(wid), SW_HIDE);
}
void Window::InvalidateAll() {
::InvalidateRect(reinterpret_cast<HWND>(wid), NULL, FALSE);
}
void Window::InvalidateRectangle(PRectangle rc) {
RECT rcw = RectFromPRectangle(rc);
::InvalidateRect(reinterpret_cast<HWND>(wid), &rcw, FALSE);
}
static LRESULT Window_SendMessage(Window *w, UINT msg, WPARAM wParam=0, LPARAM lParam=0) {
return ::SendMessage(reinterpret_cast<HWND>(w->GetID()), msg, wParam, lParam);
}
void Window::SetFont(Font &font) {
Window_SendMessage(this, WM_SETFONT,
reinterpret_cast<WPARAM>(font.GetID()), 0);
}
static void FlipBitmap(HBITMAP bitmap, int width, int height) {
HDC hdc = ::CreateCompatibleDC(NULL);
if (hdc != NULL) {
HGDIOBJ prevBmp = ::SelectObject(hdc, bitmap);
::StretchBlt(hdc, width - 1, 0, -width, height, hdc, 0, 0, width, height, SRCCOPY);
::SelectObject(hdc, prevBmp);
::DeleteDC(hdc);
}
}
static HCURSOR GetReverseArrowCursor() {
if (reverseArrowCursor != NULL)
return reverseArrowCursor;
::EnterCriticalSection(&crPlatformLock);
HCURSOR cursor = reverseArrowCursor;
if (cursor == NULL) {
cursor = ::LoadCursor(NULL, IDC_ARROW);
ICONINFO info;
if (::GetIconInfo(cursor, &info)) {
BITMAP bmp;
if (::GetObject(info.hbmMask, sizeof(bmp), &bmp)) {
FlipBitmap(info.hbmMask, bmp.bmWidth, bmp.bmHeight);
if (info.hbmColor != NULL)
FlipBitmap(info.hbmColor, bmp.bmWidth, bmp.bmHeight);
info.xHotspot = (DWORD)bmp.bmWidth - 1 - info.xHotspot;
reverseArrowCursor = ::CreateIconIndirect(&info);
if (reverseArrowCursor != NULL)
cursor = reverseArrowCursor;
}
::DeleteObject(info.hbmMask);
if (info.hbmColor != NULL)
::DeleteObject(info.hbmColor);
}
}
::LeaveCriticalSection(&crPlatformLock);
return cursor;
}
void Window::SetCursor(Cursor curs) {
switch (curs) {
case cursorText:
::SetCursor(::LoadCursor(NULL,IDC_IBEAM));
break;
case cursorUp:
::SetCursor(::LoadCursor(NULL,IDC_UPARROW));
break;
case cursorWait:
::SetCursor(::LoadCursor(NULL,IDC_WAIT));
break;
case cursorHoriz:
::SetCursor(::LoadCursor(NULL,IDC_SIZEWE));
break;
case cursorVert:
::SetCursor(::LoadCursor(NULL,IDC_SIZENS));
break;
case cursorHand:
::SetCursor(::LoadCursor(NULL,IDC_HAND));
break;
case cursorReverseArrow:
::SetCursor(GetReverseArrowCursor());
break;
case cursorArrow:
case cursorInvalid: // Should not occur, but just in case.
::SetCursor(::LoadCursor(NULL,IDC_ARROW));
break;
}
}
void Window::SetTitle(const char *s) {
::SetWindowTextA(reinterpret_cast<HWND>(wid), s);
}
/* Returns rectangle of monitor pt is on, both rect and pt are in Window's
coordinates */
PRectangle Window::GetMonitorRect(Point pt) {
// MonitorFromPoint and GetMonitorInfo are not available on Windows 95 and NT 4.
PRectangle rcPosition = GetPosition();
POINT ptDesktop = {static_cast<LONG>(pt.x + rcPosition.left),
static_cast<LONG>(pt.y + rcPosition.top)};
HMONITOR hMonitor = NULL;
if (MonitorFromPointFn)
hMonitor = MonitorFromPointFn(ptDesktop, MONITOR_DEFAULTTONEAREST);
RECT rcWork = RectFromMonitor(hMonitor);
if (rcWork.left < rcWork.right) {
PRectangle rcMonitor(
rcWork.left - rcPosition.left,
rcWork.top - rcPosition.top,
rcWork.right - rcPosition.left,
rcWork.bottom - rcPosition.top);
return rcMonitor;
} else {
return PRectangle();
}
}
struct ListItemData {
const char *text;
int pixId;
};
#define _ROUND2(n,pow2) \
( ( (n) + (pow2) - 1) & ~((pow2) - 1) )
class LineToItem {
char *words;
int wordsCount;
int wordsSize;
ListItemData *data;
int len;
int count;
private:
void FreeWords() {
delete []words;
words = NULL;
wordsCount = 0;
wordsSize = 0;
}
char *AllocWord(const char *word);
public:
LineToItem() : words(NULL), wordsCount(0), wordsSize(0), data(NULL), len(0), count(0) {
}
~LineToItem() {
Clear();
}
void Clear() {
FreeWords();
delete []data;
data = NULL;
len = 0;
count = 0;
}
ListItemData *Append(const char *text, int value);
ListItemData Get(int index) const {
if (index >= 0 && index < count) {
return data[index];
} else {
ListItemData missing = {"", -1};
return missing;
}
}
int Count() const {
return count;
}
ListItemData *AllocItem();
void SetWords(char *s) {
words = s; // N.B. will be deleted on destruction
}
};
char *LineToItem::AllocWord(const char *text) {
int chars = static_cast<int>(strlen(text) + 1);
int newCount = wordsCount + chars;
if (newCount > wordsSize) {
wordsSize = _ROUND2(newCount * 2, 8192);
char *wordsNew = new char[wordsSize];
memcpy(wordsNew, words, wordsCount);
int offset = wordsNew - words;
for (int i=0; i<count; i++)
data[i].text += offset;
delete []words;
words = wordsNew;
}
char *s = &words[wordsCount];
wordsCount = newCount;
strncpy(s, text, chars);
return s;
}
ListItemData *LineToItem::AllocItem() {
if (count >= len) {
int lenNew = _ROUND2((count+1) * 2, 1024);
ListItemData *dataNew = new ListItemData[lenNew];
memcpy(dataNew, data, count * sizeof(ListItemData));
delete []data;
data = dataNew;
len = lenNew;
}
ListItemData *item = &data[count];
count++;
return item;
}
ListItemData *LineToItem::Append(const char *text, int imageIndex) {
ListItemData *item = AllocItem();
item->text = AllocWord(text);
item->pixId = imageIndex;
return item;
}
const TCHAR ListBoxX_ClassName[] = TEXT("ListBoxX");
ListBox::ListBox() {
}
ListBox::~ListBox() {
}
class ListBoxX : public ListBox {
int lineHeight;
FontID fontCopy;
int technology;
RGBAImageSet images;
LineToItem lti;
HWND lb;
bool unicodeMode;
int desiredVisibleRows;
unsigned int maxItemCharacters;
unsigned int aveCharWidth;
Window *parent;
int ctrlID;
CallBackAction doubleClickAction;
void *doubleClickActionData;
const char *widestItem;
unsigned int maxCharWidth;
int resizeHit;
PRectangle rcPreSize;
Point dragOffset;
Point location; // Caret location at which the list is opened
int wheelDelta; // mouse wheel residue
HWND GetHWND() const;
void AppendListItem(const char *startword, const char *numword);
void AdjustWindowRect(PRectangle *rc) const;
int ItemHeight() const;
int MinClientWidth() const;
int TextOffset() const;
Point GetClientExtent() const;
POINT MinTrackSize() const;
POINT MaxTrackSize() const;
void SetRedraw(bool on);
void OnDoubleClick();
void ResizeToCursor();
void StartResize(WPARAM);
int NcHitTest(WPARAM, LPARAM) const;
void CentreItem(int);
void Paint(HDC);
static LRESULT PASCAL ControlWndProc(HWND hWnd, UINT iMessage, WPARAM wParam, LPARAM lParam);
static const Point ItemInset; // Padding around whole item
static const Point TextInset; // Padding around text
static const Point ImageInset; // Padding around image
public:
ListBoxX() : lineHeight(10), fontCopy(0), technology(0), lb(0), unicodeMode(false),
desiredVisibleRows(5), maxItemCharacters(0), aveCharWidth(8),
parent(NULL), ctrlID(0), doubleClickAction(NULL), doubleClickActionData(NULL),
widestItem(NULL), maxCharWidth(1), resizeHit(0), wheelDelta(0) {
}
virtual ~ListBoxX() {
if (fontCopy) {
::DeleteObject(fontCopy);
fontCopy = 0;
}
}
virtual void SetFont(Font &font);
virtual void Create(Window &parent, int ctrlID, Point location_, int lineHeight_, bool unicodeMode_, int technology_);
virtual void SetAverageCharWidth(int width);
virtual void SetVisibleRows(int rows);
virtual int GetVisibleRows() const;
virtual PRectangle GetDesiredRect();
virtual int CaretFromEdge();
virtual void Clear();
virtual void Append(char *s, int type = -1);
virtual int Length();
virtual void Select(int n);
virtual int GetSelection();
virtual int Find(const char *prefix);
virtual void GetValue(int n, char *value, int len);
virtual void RegisterImage(int type, const char *xpm_data);
virtual void RegisterRGBAImage(int type, int width, int height, const unsigned char *pixelsImage);
virtual void ClearRegisteredImages();
virtual void SetDoubleClickAction(CallBackAction action, void *data) {
doubleClickAction = action;
doubleClickActionData = data;
}
virtual void SetList(const char *list, char separator, char typesep);
void Draw(DRAWITEMSTRUCT *pDrawItem);
LRESULT WndProc(HWND hWnd, UINT iMessage, WPARAM wParam, LPARAM lParam);
static LRESULT PASCAL StaticWndProc(HWND hWnd, UINT iMessage, WPARAM wParam, LPARAM lParam);
};
const Point ListBoxX::ItemInset(0, 0);
const Point ListBoxX::TextInset(2, 0);
const Point ListBoxX::ImageInset(1, 0);
ListBox *ListBox::Allocate() {
ListBoxX *lb = new ListBoxX();
return lb;
}
void ListBoxX::Create(Window &parent_, int ctrlID_, Point location_, int lineHeight_, bool unicodeMode_, int technology_) {
parent = &parent_;
ctrlID = ctrlID_;
location = location_;
lineHeight = lineHeight_;
unicodeMode = unicodeMode_;
technology = technology_;
HWND hwndParent = reinterpret_cast<HWND>(parent->GetID());
HINSTANCE hinstanceParent = GetWindowInstance(hwndParent);
// Window created as popup so not clipped within parent client area
wid = ::CreateWindowEx(
WS_EX_WINDOWEDGE, ListBoxX_ClassName, TEXT(""),
WS_POPUP | WS_THICKFRAME,
100,100, 150,80, hwndParent,
NULL,
hinstanceParent,
this);
POINT locationw = {static_cast<LONG>(location.x), static_cast<LONG>(location.y)};
::MapWindowPoints(hwndParent, NULL, &locationw, 1);
location = Point(locationw.x, locationw.y);
}
void ListBoxX::SetFont(Font &font) {
if (font.GetID()) {
if (fontCopy) {
::DeleteObject(fontCopy);
fontCopy = 0;
}
FormatAndMetrics *pfm = reinterpret_cast<FormatAndMetrics *>(font.GetID());
fontCopy = pfm->HFont();
::SendMessage(lb, WM_SETFONT, reinterpret_cast<WPARAM>(fontCopy), 0);
}
}
void ListBoxX::SetAverageCharWidth(int width) {
aveCharWidth = width;
}
void ListBoxX::SetVisibleRows(int rows) {
desiredVisibleRows = rows;
}
int ListBoxX::GetVisibleRows() const {
return desiredVisibleRows;
}
HWND ListBoxX::GetHWND() const {
return reinterpret_cast<HWND>(GetID());
}
PRectangle ListBoxX::GetDesiredRect() {
PRectangle rcDesired = GetPosition();
int rows = Length();
if ((rows == 0) || (rows > desiredVisibleRows))
rows = desiredVisibleRows;
rcDesired.bottom = rcDesired.top + ItemHeight() * rows;
int width = MinClientWidth();
HDC hdc = ::GetDC(lb);
HFONT oldFont = SelectFont(hdc, fontCopy);
SIZE textSize = {0, 0};
int len = static_cast<int>(widestItem ? strlen(widestItem) : 0);
if (unicodeMode) {
const TextWide tbuf(widestItem, len, unicodeMode);
::GetTextExtentPoint32W(hdc, tbuf.buffer, tbuf.tlen, &textSize);
} else {
::GetTextExtentPoint32A(hdc, widestItem, len, &textSize);
}
TEXTMETRIC tm;
::GetTextMetrics(hdc, &tm);
maxCharWidth = tm.tmMaxCharWidth;
SelectFont(hdc, oldFont);
::ReleaseDC(lb, hdc);
int widthDesired = Platform::Maximum(textSize.cx, (len + 1) * tm.tmAveCharWidth);
if (width < widthDesired)
width = widthDesired;
rcDesired.right = rcDesired.left + TextOffset() + width + (TextInset.x * 2);
if (Length() > rows)
rcDesired.right += ::GetSystemMetrics(SM_CXVSCROLL);
AdjustWindowRect(&rcDesired);
return rcDesired;
}
int ListBoxX::TextOffset() const {
int pixWidth = images.GetWidth();
return pixWidth == 0 ? ItemInset.x : ItemInset.x + pixWidth + (ImageInset.x * 2);
}
int ListBoxX::CaretFromEdge() {
PRectangle rc;
AdjustWindowRect(&rc);
return TextOffset() + TextInset.x + (0 - rc.left) - 1;
}
void ListBoxX::Clear() {
::SendMessage(lb, LB_RESETCONTENT, 0, 0);
maxItemCharacters = 0;
widestItem = NULL;
lti.Clear();
}
void ListBoxX::Append(char *s, int type) {
int index = ::SendMessage(lb, LB_ADDSTRING, 0, reinterpret_cast<LPARAM>(s));
if (index < 0)
return;
ListItemData *newItem = lti.Append(s, type);
unsigned int len = static_cast<unsigned int>(strlen(s));
if (maxItemCharacters < len) {
maxItemCharacters = len;
widestItem = newItem->text;
}
}
int ListBoxX::Length() {
return lti.Count();
}
void ListBoxX::Select(int n) {
// We are going to scroll to centre on the new selection and then select it, so disable
// redraw to avoid flicker caused by a painting new selection twice in unselected and then
// selected states
SetRedraw(false);
CentreItem(n);
::SendMessage(lb, LB_SETCURSEL, n, 0);
SetRedraw(true);
}
int ListBoxX::GetSelection() {
return ::SendMessage(lb, LB_GETCURSEL, 0, 0);
}
// This is not actually called at present
int ListBoxX::Find(const char *) {
return LB_ERR;
}
void ListBoxX::GetValue(int n, char *value, int len) {
ListItemData item = lti.Get(n);
strncpy(value, item.text, len);
value[len-1] = '\0';
}
void ListBoxX::RegisterImage(int type, const char *xpm_data) {
XPM xpmImage(xpm_data);
images.Add(type, new RGBAImage(xpmImage));
}
void ListBoxX::RegisterRGBAImage(int type, int width, int height, const unsigned char *pixelsImage) {
images.Add(type, new RGBAImage(width, height, 1.0, pixelsImage));
}
void ListBoxX::ClearRegisteredImages() {
images.Clear();
}
void ListBoxX::Draw(DRAWITEMSTRUCT *pDrawItem) {
if ((pDrawItem->itemAction == ODA_SELECT) || (pDrawItem->itemAction == ODA_DRAWENTIRE)) {
RECT rcBox = pDrawItem->rcItem;
rcBox.left += TextOffset();
if (pDrawItem->itemState & ODS_SELECTED) {
RECT rcImage = pDrawItem->rcItem;
rcImage.right = rcBox.left;
// The image is not highlighted
::FillRect(pDrawItem->hDC, &rcImage, reinterpret_cast<HBRUSH>(COLOR_WINDOW+1));
::FillRect(pDrawItem->hDC, &rcBox, reinterpret_cast<HBRUSH>(COLOR_HIGHLIGHT+1));
::SetBkColor(pDrawItem->hDC, ::GetSysColor(COLOR_HIGHLIGHT));
::SetTextColor(pDrawItem->hDC, ::GetSysColor(COLOR_HIGHLIGHTTEXT));
} else {
::FillRect(pDrawItem->hDC, &pDrawItem->rcItem, reinterpret_cast<HBRUSH>(COLOR_WINDOW+1));
::SetBkColor(pDrawItem->hDC, ::GetSysColor(COLOR_WINDOW));
::SetTextColor(pDrawItem->hDC, ::GetSysColor(COLOR_WINDOWTEXT));
}
ListItemData item = lti.Get(pDrawItem->itemID);
int pixId = item.pixId;
const char *text = item.text;
int len = static_cast<int>(strlen(text));
RECT rcText = rcBox;
::InsetRect(&rcText, TextInset.x, TextInset.y);
if (unicodeMode) {
const TextWide tbuf(text, len, unicodeMode);
::DrawTextW(pDrawItem->hDC, tbuf.buffer, tbuf.tlen, &rcText, DT_NOPREFIX|DT_END_ELLIPSIS|DT_SINGLELINE|DT_NOCLIP);
} else {
::DrawTextA(pDrawItem->hDC, text, len, &rcText, DT_NOPREFIX|DT_END_ELLIPSIS|DT_SINGLELINE|DT_NOCLIP);
}
if (pDrawItem->itemState & ODS_SELECTED) {
::DrawFocusRect(pDrawItem->hDC, &rcBox);
}
// Draw the image, if any
RGBAImage *pimage = images.Get(pixId);
if (pimage) {
Surface *surfaceItem = Surface::Allocate(technology);
if (surfaceItem) {
if (technology == SCWIN_TECH_GDI) {
surfaceItem->Init(pDrawItem->hDC, pDrawItem->hwndItem);
int left = pDrawItem->rcItem.left + ItemInset.x + ImageInset.x;
PRectangle rcImage(left, pDrawItem->rcItem.top,
left + images.GetWidth(), pDrawItem->rcItem.bottom);
surfaceItem->DrawRGBAImage(rcImage,
pimage->GetWidth(), pimage->GetHeight(), pimage->Pixels());
delete surfaceItem;
::SetTextAlign(pDrawItem->hDC, TA_TOP);
} else {
#if defined(USE_D2D)
D2D1_RENDER_TARGET_PROPERTIES props = D2D1::RenderTargetProperties(
D2D1_RENDER_TARGET_TYPE_DEFAULT,
D2D1::PixelFormat(
DXGI_FORMAT_B8G8R8A8_UNORM,
D2D1_ALPHA_MODE_IGNORE),
0,
0,
D2D1_RENDER_TARGET_USAGE_NONE,
D2D1_FEATURE_LEVEL_DEFAULT
);
ID2D1DCRenderTarget *pDCRT = 0;
HRESULT hr = pD2DFactory->CreateDCRenderTarget(&props, &pDCRT);
if (SUCCEEDED(hr)) {
RECT rcWindow;
GetClientRect(pDrawItem->hwndItem, &rcWindow);
hr = pDCRT->BindDC(pDrawItem->hDC, &rcWindow);
if (SUCCEEDED(hr)) {
surfaceItem->Init(pDCRT, pDrawItem->hwndItem);
pDCRT->BeginDraw();
int left = pDrawItem->rcItem.left + ItemInset.x + ImageInset.x;
PRectangle rcImage(left, pDrawItem->rcItem.top,
left + images.GetWidth(), pDrawItem->rcItem.bottom);
surfaceItem->DrawRGBAImage(rcImage,
pimage->GetWidth(), pimage->GetHeight(), pimage->Pixels());
delete surfaceItem;
pDCRT->EndDraw();
pDCRT->Release();
}
}
#endif
}
}
}
}
}
void ListBoxX::AppendListItem(const char *startword, const char *numword) {
ListItemData *item = lti.AllocItem();
item->text = startword;
if (numword) {
int pixId = 0;
char ch;
while ((ch = *++numword) != '\0') {
pixId = 10 * pixId + (ch - '0');
}
item->pixId = pixId;
} else {
item->pixId = -1;
}
unsigned int len = static_cast<unsigned int>(strlen(item->text));
if (maxItemCharacters < len) {
maxItemCharacters = len;
widestItem = item->text;
}
}
void ListBoxX::SetList(const char *list, char separator, char typesep) {
// Turn off redraw while populating the list - this has a significant effect, even if
// the listbox is not visible.
SetRedraw(false);
Clear();
size_t size = strlen(list);
char *words = new char[size+1];
lti.SetWords(words);
memcpy(words, list, size+1);
char *startword = words;
char *numword = NULL;
for (size_t i=0; i < size; i++) {
if (words[i] == separator) {
words[i] = '\0';
if (numword)
*numword = '\0';
AppendListItem(startword, numword);
startword = words + i + 1;
numword = NULL;
} else if (words[i] == typesep) {
numword = words + i;
}
}
if (startword) {
if (numword)
*numword = '\0';
AppendListItem(startword, numword);
}
// Finally populate the listbox itself with the correct number of items
int count = lti.Count();
::SendMessage(lb, LB_INITSTORAGE, count, 0);
for (int j=0; j<count; j++) {
::SendMessage(lb, LB_ADDSTRING, 0, j+1);
}
SetRedraw(true);
}
void ListBoxX::AdjustWindowRect(PRectangle *rc) const {
RECT rcw = RectFromPRectangle(*rc);
::AdjustWindowRectEx(&rcw, WS_THICKFRAME, false, WS_EX_WINDOWEDGE);
*rc = PRectangle(rcw.left, rcw.top, rcw.right, rcw.bottom);
}
int ListBoxX::ItemHeight() const {
int itemHeight = lineHeight + (TextInset.y * 2);
int pixHeight = images.GetHeight() + (ImageInset.y * 2);
if (itemHeight < pixHeight) {
itemHeight = pixHeight;
}
return itemHeight;
}
int ListBoxX::MinClientWidth() const {
return 12 * (aveCharWidth+aveCharWidth/3);
}
POINT ListBoxX::MinTrackSize() const {
PRectangle rc(0, 0, MinClientWidth(), ItemHeight());
AdjustWindowRect(&rc);
POINT ret = {static_cast<LONG>(rc.Width()), static_cast<LONG>(rc.Height())};
return ret;
}
POINT ListBoxX::MaxTrackSize() const {
PRectangle rc(0, 0,
maxCharWidth * maxItemCharacters + TextInset.x * 2 +
TextOffset() + ::GetSystemMetrics(SM_CXVSCROLL),
ItemHeight() * lti.Count());
AdjustWindowRect(&rc);
POINT ret = {static_cast<LONG>(rc.Width()), static_cast<LONG>(rc.Height())};
return ret;
}
void ListBoxX::SetRedraw(bool on) {
::SendMessage(lb, WM_SETREDRAW, static_cast<BOOL>(on), 0);
if (on)
::InvalidateRect(lb, NULL, TRUE);
}
void ListBoxX::ResizeToCursor() {
PRectangle rc = GetPosition();
POINT ptw;
::GetCursorPos(&ptw);
Point pt(ptw.x, ptw.y);
pt.x += dragOffset.x;
pt.y += dragOffset.y;
switch (resizeHit) {
case HTLEFT:
rc.left = pt.x;
break;
case HTRIGHT:
rc.right = pt.x;
break;
case HTTOP:
rc.top = pt.y;
break;
case HTTOPLEFT:
rc.top = pt.y;
rc.left = pt.x;
break;
case HTTOPRIGHT:
rc.top = pt.y;
rc.right = pt.x;
break;
case HTBOTTOM:
rc.bottom = pt.y;
break;
case HTBOTTOMLEFT:
rc.bottom = pt.y;
rc.left = pt.x;
break;
case HTBOTTOMRIGHT:
rc.bottom = pt.y;
rc.right = pt.x;
break;
}
POINT ptMin = MinTrackSize();
POINT ptMax = MaxTrackSize();
// We don't allow the left edge to move at present, but just in case
rc.left = Platform::Maximum(Platform::Minimum(rc.left, rcPreSize.right - ptMin.x), rcPreSize.right - ptMax.x);
rc.top = Platform::Maximum(Platform::Minimum(rc.top, rcPreSize.bottom - ptMin.y), rcPreSize.bottom - ptMax.y);
rc.right = Platform::Maximum(Platform::Minimum(rc.right, rcPreSize.left + ptMax.x), rcPreSize.left + ptMin.x);
rc.bottom = Platform::Maximum(Platform::Minimum(rc.bottom, rcPreSize.top + ptMax.y), rcPreSize.top + ptMin.y);
SetPosition(rc);
}
void ListBoxX::StartResize(WPARAM hitCode) {
rcPreSize = GetPosition();
POINT cursorPos;
::GetCursorPos(&cursorPos);
switch (hitCode) {
case HTRIGHT:
case HTBOTTOM:
case HTBOTTOMRIGHT:
dragOffset.x = rcPreSize.right - cursorPos.x;
dragOffset.y = rcPreSize.bottom - cursorPos.y;
break;
case HTTOPRIGHT:
dragOffset.x = rcPreSize.right - cursorPos.x;
dragOffset.y = rcPreSize.top - cursorPos.y;
break;
// Note that the current hit test code prevents the left edge cases ever firing
// as we don't want the left edge to be moveable
case HTLEFT:
case HTTOP:
case HTTOPLEFT:
dragOffset.x = rcPreSize.left - cursorPos.x;
dragOffset.y = rcPreSize.top - cursorPos.y;
break;
case HTBOTTOMLEFT:
dragOffset.x = rcPreSize.left - cursorPos.x;
dragOffset.y = rcPreSize.bottom - cursorPos.y;
break;
default:
return;
}
::SetCapture(GetHWND());
resizeHit = hitCode;
}
int ListBoxX::NcHitTest(WPARAM wParam, LPARAM lParam) const {
int hit = ::DefWindowProc(GetHWND(), WM_NCHITTEST, wParam, lParam);
// There is an apparent bug in the DefWindowProc hit test code whereby it will
// return HTTOPXXX if the window in question is shorter than the default
// window caption height + frame, even if one is hovering over the bottom edge of
// the frame, so workaround that here
if (hit >= HTTOP && hit <= HTTOPRIGHT) {
int minHeight = GetSystemMetrics(SM_CYMINTRACK);
PRectangle rc = const_cast<ListBoxX*>(this)->GetPosition();
int yPos = GET_Y_LPARAM(lParam);
if ((rc.Height() < minHeight) && (yPos > ((rc.top + rc.bottom)/2))) {
hit += HTBOTTOM - HTTOP;
}
}
// Nerver permit resizing that moves the left edge. Allow movement of top or bottom edge
// depending on whether the list is above or below the caret
switch (hit) {
case HTLEFT:
case HTTOPLEFT:
case HTBOTTOMLEFT:
hit = HTERROR;
break;
case HTTOP:
case HTTOPRIGHT: {
PRectangle rc = const_cast<ListBoxX*>(this)->GetPosition();
// Valid only if caret below list
if (location.y < rc.top)
hit = HTERROR;
}
break;
case HTBOTTOM:
case HTBOTTOMRIGHT: {
PRectangle rc = const_cast<ListBoxX*>(this)->GetPosition();
// Valid only if caret above list
if (rc.bottom < location.y)
hit = HTERROR;
}
break;
}
return hit;
}
void ListBoxX::OnDoubleClick() {
if (doubleClickAction != NULL) {
doubleClickAction(doubleClickActionData);
}
}
Point ListBoxX::GetClientExtent() const {
PRectangle rc = const_cast<ListBoxX*>(this)->GetClientPosition();
return Point(rc.Width(), rc.Height());
}
void ListBoxX::CentreItem(int n) {
// If below mid point, scroll up to centre, but with more items below if uneven
if (n >= 0) {
Point extent = GetClientExtent();
int visible = extent.y/ItemHeight();
if (visible < Length()) {
int top = ::SendMessage(lb, LB_GETTOPINDEX, 0, 0);
int half = (visible - 1) / 2;
if (n > (top + half))
::SendMessage(lb, LB_SETTOPINDEX, n - half , 0);
}
}
}
// Performs a double-buffered paint operation to avoid flicker
void ListBoxX::Paint(HDC hDC) {
Point extent = GetClientExtent();
HBITMAP hBitmap = ::CreateCompatibleBitmap(hDC, extent.x, extent.y);
HDC bitmapDC = ::CreateCompatibleDC(hDC);
HBITMAP hBitmapOld = SelectBitmap(bitmapDC, hBitmap);
// The list background is mainly erased during painting, but can be a small
// unpainted area when at the end of a non-integrally sized list with a
// vertical scroll bar
RECT rc = { 0, 0, static_cast<LONG>(extent.x), static_cast<LONG>(extent.y) };
::FillRect(bitmapDC, &rc, reinterpret_cast<HBRUSH>(COLOR_WINDOW+1));
// Paint the entire client area and vertical scrollbar
::SendMessage(lb, WM_PRINT, reinterpret_cast<WPARAM>(bitmapDC), PRF_CLIENT|PRF_NONCLIENT);
::BitBlt(hDC, 0, 0, extent.x, extent.y, bitmapDC, 0, 0, SRCCOPY);
// Select a stock brush to prevent warnings from BoundsChecker
::SelectObject(bitmapDC, GetStockFont(WHITE_BRUSH));
SelectBitmap(bitmapDC, hBitmapOld);
::DeleteDC(bitmapDC);
::DeleteObject(hBitmap);
}
LRESULT PASCAL ListBoxX::ControlWndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {
try {
switch (uMsg) {
case WM_ERASEBKGND:
return TRUE;
case WM_PAINT: {
PAINTSTRUCT ps;
HDC hDC = ::BeginPaint(hWnd, &ps);
ListBoxX *lbx = reinterpret_cast<ListBoxX *>(PointerFromWindow(::GetParent(hWnd)));
if (lbx)
lbx->Paint(hDC);
::EndPaint(hWnd, &ps);
}
return 0;
case WM_MOUSEACTIVATE:
// This prevents the view activating when the scrollbar is clicked
return MA_NOACTIVATE;
case WM_LBUTTONDOWN: {
// We must take control of selection to prevent the ListBox activating
// the popup
LRESULT lResult = ::SendMessage(hWnd, LB_ITEMFROMPOINT, 0, lParam);
int item = LOWORD(lResult);
if (HIWORD(lResult) == 0 && item >= 0) {
::SendMessage(hWnd, LB_SETCURSEL, item, 0);
}
}
return 0;
case WM_LBUTTONUP:
return 0;
case WM_LBUTTONDBLCLK: {
ListBoxX *lbx = reinterpret_cast<ListBoxX *>(PointerFromWindow(::GetParent(hWnd)));
if (lbx) {
lbx->OnDoubleClick();
}
}
return 0;
case WM_MBUTTONDOWN:
// disable the scroll wheel button click action
return 0;
}
WNDPROC prevWndProc = reinterpret_cast<WNDPROC>(GetWindowLongPtr(hWnd, GWLP_USERDATA));
if (prevWndProc) {
return ::CallWindowProc(prevWndProc, hWnd, uMsg, wParam, lParam);
} else {
return ::DefWindowProc(hWnd, uMsg, wParam, lParam);
}
} catch (...) {
}
return ::DefWindowProc(hWnd, uMsg, wParam, lParam);
}
LRESULT ListBoxX::WndProc(HWND hWnd, UINT iMessage, WPARAM wParam, LPARAM lParam) {
switch (iMessage) {
case WM_CREATE: {
HINSTANCE hinstanceParent = GetWindowInstance(reinterpret_cast<HWND>(parent->GetID()));
// Note that LBS_NOINTEGRALHEIGHT is specified to fix cosmetic issue when resizing the list
// but has useful side effect of speeding up list population significantly
lb = ::CreateWindowEx(
0, TEXT("listbox"), TEXT(""),
WS_CHILD | WS_VSCROLL | WS_VISIBLE |
LBS_OWNERDRAWFIXED | LBS_NODATA | LBS_NOINTEGRALHEIGHT,
0, 0, 150,80, hWnd,
reinterpret_cast<HMENU>(ctrlID),
hinstanceParent,
0);
WNDPROC prevWndProc = reinterpret_cast<WNDPROC>(::SetWindowLongPtr(lb, GWLP_WNDPROC, reinterpret_cast<LONG_PTR>(ControlWndProc)));
::SetWindowLongPtr(lb, GWLP_USERDATA, reinterpret_cast<LONG_PTR>(prevWndProc));
}
break;
case WM_SIZE:
if (lb) {
SetRedraw(false);
::SetWindowPos(lb, 0, 0,0, LOWORD(lParam), HIWORD(lParam), SWP_NOZORDER|SWP_NOACTIVATE|SWP_NOMOVE);
// Ensure the selection remains visible
CentreItem(GetSelection());
SetRedraw(true);
}
break;
case WM_PAINT: {
PAINTSTRUCT ps;
::BeginPaint(hWnd, &ps);
::EndPaint(hWnd, &ps);
}
break;
case WM_COMMAND:
// This is not actually needed now - the registered double click action is used
// directly to action a choice from the list.
::SendMessage(reinterpret_cast<HWND>(parent->GetID()), iMessage, wParam, lParam);
break;
case WM_MEASUREITEM: {
MEASUREITEMSTRUCT *pMeasureItem = reinterpret_cast<MEASUREITEMSTRUCT *>(lParam);
pMeasureItem->itemHeight = static_cast<unsigned int>(ItemHeight());
}
break;
case WM_DRAWITEM:
Draw(reinterpret_cast<DRAWITEMSTRUCT *>(lParam));
break;
case WM_DESTROY:
lb = 0;
::SetWindowLong(hWnd, 0, 0);
return ::DefWindowProc(hWnd, iMessage, wParam, lParam);
case WM_ERASEBKGND:
// To reduce flicker we can elide background erasure since this window is
// completely covered by its child.
return TRUE;
case WM_GETMINMAXINFO: {
MINMAXINFO *minMax = reinterpret_cast<MINMAXINFO*>(lParam);
minMax->ptMaxTrackSize = MaxTrackSize();
minMax->ptMinTrackSize = MinTrackSize();
}
break;
case WM_MOUSEACTIVATE:
return MA_NOACTIVATE;
case WM_NCHITTEST:
return NcHitTest(wParam, lParam);
case WM_NCLBUTTONDOWN:
// We have to implement our own window resizing because the DefWindowProc
// implementation insists on activating the resized window
StartResize(wParam);
return 0;
case WM_MOUSEMOVE: {
if (resizeHit == 0) {
return ::DefWindowProc(hWnd, iMessage, wParam, lParam);
} else {
ResizeToCursor();
}
}
break;
case WM_LBUTTONUP:
case WM_CANCELMODE:
if (resizeHit != 0) {
resizeHit = 0;
::ReleaseCapture();
}
return ::DefWindowProc(hWnd, iMessage, wParam, lParam);
case WM_MOUSEWHEEL:
wheelDelta -= static_cast<short>(HIWORD(wParam));
if (abs(wheelDelta) >= WHEEL_DELTA) {
int nRows = GetVisibleRows();
int linesToScroll = 1;
if (nRows > 1) {
linesToScroll = nRows - 1;
}
if (linesToScroll > 3) {
linesToScroll = 3;
}
linesToScroll *= (wheelDelta / WHEEL_DELTA);
int top = ::SendMessage(lb, LB_GETTOPINDEX, 0, 0) + linesToScroll;
if (top < 0) {
top = 0;
}
::SendMessage(lb, LB_SETTOPINDEX, top, 0);
// update wheel delta residue
if (wheelDelta >= 0)
wheelDelta = wheelDelta % WHEEL_DELTA;
else
wheelDelta = - (-wheelDelta % WHEEL_DELTA);
}
break;
default:
return ::DefWindowProc(hWnd, iMessage, wParam, lParam);
}
return 0;
}
LRESULT PASCAL ListBoxX::StaticWndProc(
HWND hWnd, UINT iMessage, WPARAM wParam, LPARAM lParam) {
if (iMessage == WM_CREATE) {
CREATESTRUCT *pCreate = reinterpret_cast<CREATESTRUCT *>(lParam);
SetWindowPointer(hWnd, pCreate->lpCreateParams);
}
// Find C++ object associated with window.
ListBoxX *lbx = reinterpret_cast<ListBoxX *>(PointerFromWindow(hWnd));
if (lbx) {
return lbx->WndProc(hWnd, iMessage, wParam, lParam);
} else {
return ::DefWindowProc(hWnd, iMessage, wParam, lParam);
}
}
static bool ListBoxX_Register() {
WNDCLASSEX wndclassc;
wndclassc.cbSize = sizeof(wndclassc);
// We need CS_HREDRAW and CS_VREDRAW because of the ellipsis that might be drawn for
// truncated items in the list and the appearance/disappearance of the vertical scroll bar.
// The list repaint is double-buffered to avoid the flicker this would otherwise cause.
wndclassc.style = CS_GLOBALCLASS | CS_HREDRAW | CS_VREDRAW;
wndclassc.cbClsExtra = 0;
wndclassc.cbWndExtra = sizeof(ListBoxX *);
wndclassc.hInstance = hinstPlatformRes;
wndclassc.hIcon = NULL;
wndclassc.hbrBackground = NULL;
wndclassc.lpszMenuName = NULL;
wndclassc.lpfnWndProc = ListBoxX::StaticWndProc;
wndclassc.hCursor = ::LoadCursor(NULL, IDC_ARROW);
wndclassc.lpszClassName = ListBoxX_ClassName;
wndclassc.hIconSm = 0;
return ::RegisterClassEx(&wndclassc) != 0;
}
bool ListBoxX_Unregister() {
return ::UnregisterClass(ListBoxX_ClassName, hinstPlatformRes) != 0;
}
Menu::Menu() : mid(0) {
}
void Menu::CreatePopUp() {
Destroy();
mid = ::CreatePopupMenu();
}
void Menu::Destroy() {
if (mid)
::DestroyMenu(reinterpret_cast<HMENU>(mid));
mid = 0;
}
void Menu::Show(Point pt, Window &w) {
::TrackPopupMenu(reinterpret_cast<HMENU>(mid),
0, pt.x - 4, pt.y, 0,
reinterpret_cast<HWND>(w.GetID()), NULL);
Destroy();
}
static bool initialisedET = false;
static bool usePerformanceCounter = false;
static LARGE_INTEGER frequency;
ElapsedTime::ElapsedTime() {
if (!initialisedET) {
usePerformanceCounter = ::QueryPerformanceFrequency(&frequency) != 0;
initialisedET = true;
}
if (usePerformanceCounter) {
LARGE_INTEGER timeVal;
::QueryPerformanceCounter(&timeVal);
bigBit = timeVal.HighPart;
littleBit = timeVal.LowPart;
} else {
bigBit = clock();
}
}
double ElapsedTime::Duration(bool reset) {
double result;
long endBigBit;
long endLittleBit;
if (usePerformanceCounter) {
LARGE_INTEGER lEnd;
::QueryPerformanceCounter(&lEnd);
endBigBit = lEnd.HighPart;
endLittleBit = lEnd.LowPart;
LARGE_INTEGER lBegin;
lBegin.HighPart = bigBit;
lBegin.LowPart = littleBit;
double elapsed = lEnd.QuadPart - lBegin.QuadPart;
result = elapsed / static_cast<double>(frequency.QuadPart);
} else {
endBigBit = clock();
endLittleBit = 0;
double elapsed = endBigBit - bigBit;
result = elapsed / CLOCKS_PER_SEC;
}
if (reset) {
bigBit = endBigBit;
littleBit = endLittleBit;
}
return result;
}
class DynamicLibraryImpl : public DynamicLibrary {
protected:
HMODULE h;
public:
DynamicLibraryImpl(const char *modulePath) {
h = ::LoadLibraryA(modulePath);
}
virtual ~DynamicLibraryImpl() {
if (h != NULL)
::FreeLibrary(h);
}
// Use GetProcAddress to get a pointer to the relevant function.
virtual Function FindFunction(const char *name) {
if (h != NULL) {
// C++ standard doesn't like casts betwen function pointers and void pointers so use a union
union {
FARPROC fp;
Function f;
} fnConv;
fnConv.fp = ::GetProcAddress(h, name);
return fnConv.f;
} else
return NULL;
}
virtual bool IsValid() {
return h != NULL;
}
};
DynamicLibrary *DynamicLibrary::Load(const char *modulePath) {
return static_cast<DynamicLibrary *>(new DynamicLibraryImpl(modulePath));
}
ColourDesired Platform::Chrome() {
return ::GetSysColor(COLOR_3DFACE);
}
ColourDesired Platform::ChromeHighlight() {
return ::GetSysColor(COLOR_3DHIGHLIGHT);
}
const char *Platform::DefaultFont() {
return "Verdana";
}
int Platform::DefaultFontSize() {
return 8;
}
unsigned int Platform::DoubleClickTime() {
return ::GetDoubleClickTime();
}
bool Platform::MouseButtonBounce() {
return false;
}
void Platform::DebugDisplay(const char *s) {
::OutputDebugStringA(s);
}
bool Platform::IsKeyDown(int key) {
return (::GetKeyState(key) & 0x80000000) != 0;
}
long Platform::SendScintilla(WindowID w, unsigned int msg, unsigned long wParam, long lParam) {
return ::SendMessage(reinterpret_cast<HWND>(w), msg, wParam, lParam);
}
long Platform::SendScintillaPointer(WindowID w, unsigned int msg, unsigned long wParam, void *lParam) {
return ::SendMessage(reinterpret_cast<HWND>(w), msg, wParam,
reinterpret_cast<LPARAM>(lParam));
}
bool Platform::IsDBCSLeadByte(int codePage, char ch) {
// Byte ranges found in Wikipedia articles with relevant search strings in each case
unsigned char uch = static_cast<unsigned char>(ch);
switch (codePage) {
case 932:
// Shift_jis
return ((uch >= 0x81) && (uch <= 0x9F)) ||
((uch >= 0xE0) && (uch <= 0xEF));
case 936:
// GBK
return (uch >= 0x81) && (uch <= 0xFE);
case 949:
// Korean Wansung KS C-5601-1987
return (uch >= 0x81) && (uch <= 0xFE);
case 950:
// Big5
return (uch >= 0x81) && (uch <= 0xFE);
case 1361:
// Korean Johab KS C-5601-1992
return
((uch >= 0x84) && (uch <= 0xD3)) ||
((uch >= 0xD8) && (uch <= 0xDE)) ||
((uch >= 0xE0) && (uch <= 0xF9));
}
return false;
}
int Platform::DBCSCharLength(int codePage, const char *s) {
if (codePage == 932 || codePage == 936 || codePage == 949 ||
codePage == 950 || codePage == 1361) {
return Platform::IsDBCSLeadByte(codePage, s[0]) ? 2 : 1;
} else {
return 1;
}
}
int Platform::DBCSCharMaxLength() {
return 2;
}
// These are utility functions not really tied to a platform
int Platform::Minimum(int a, int b) {
if (a < b)
return a;
else
return b;
}
int Platform::Maximum(int a, int b) {
if (a > b)
return a;
else
return b;
}
//#define TRACE
#ifdef TRACE
void Platform::DebugPrintf(const char *format, ...) {
char buffer[2000];
va_list pArguments;
va_start(pArguments, format);
vsprintf(buffer,format,pArguments);
va_end(pArguments);
Platform::DebugDisplay(buffer);
}
#else
void Platform::DebugPrintf(const char *, ...) {
}
#endif
static bool assertionPopUps = true;
bool Platform::ShowAssertionPopUps(bool assertionPopUps_) {
bool ret = assertionPopUps;
assertionPopUps = assertionPopUps_;
return ret;
}
void Platform::Assert(const char *c, const char *file, int line) {
char buffer[2000];
sprintf(buffer, "Assertion [%s] failed at %s %d", c, file, line);
if (assertionPopUps) {
int idButton = ::MessageBoxA(0, buffer, "Assertion failure",
MB_ABORTRETRYIGNORE|MB_ICONHAND|MB_SETFOREGROUND|MB_TASKMODAL);
if (idButton == IDRETRY) {
::DebugBreak();
} else if (idButton == IDIGNORE) {
// all OK
} else {
abort();
}
} else {
strcat(buffer, "\r\n");
Platform::DebugDisplay(buffer);
::DebugBreak();
abort();
}
}
int Platform::Clamp(int val, int minVal, int maxVal) {
if (val > maxVal)
val = maxVal;
if (val < minVal)
val = minVal;
return val;
}
void Platform_Initialise(void *hInstance) {
OSVERSIONINFO osv = {sizeof(OSVERSIONINFO),0,0,0,0,TEXT("")};
::GetVersionEx(&osv);
onNT = osv.dwPlatformId == VER_PLATFORM_WIN32_NT;
::InitializeCriticalSection(&crPlatformLock);
hinstPlatformRes = reinterpret_cast<HINSTANCE>(hInstance);
// This may be called from DllMain, in which case the call to LoadLibrary
// is bad because it can upset the DLL load order.
if (!hDLLImage) {
hDLLImage = ::LoadLibrary(TEXT("Msimg32"));
}
if (hDLLImage) {
AlphaBlendFn = (AlphaBlendSig)::GetProcAddress(hDLLImage, "AlphaBlend");
}
if (!hDLLUser32) {
hDLLUser32 = ::LoadLibrary(TEXT("User32"));
}
if (hDLLUser32) {
MonitorFromPointFn = (MonitorFromPointSig)::GetProcAddress(hDLLUser32, "MonitorFromPoint");
MonitorFromRectFn = (MonitorFromRectSig)::GetProcAddress(hDLLUser32, "MonitorFromRect");
GetMonitorInfoFn = (GetMonitorInfoSig)::GetProcAddress(hDLLUser32, "GetMonitorInfoA");
}
ListBoxX_Register();
}
void Platform_Finalise() {
if (reverseArrowCursor != NULL)
::DestroyCursor(reverseArrowCursor);
ListBoxX_Unregister();
::DeleteCriticalSection(&crPlatformLock);
}