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/*----------------------------------------------------------------------------*/
/* */
/* Copyright (c) 2006-2013 Rexx Language Association. All rights reserved. */
/* */
/* This program and the accompanying materials are made available under */
/* the terms of the Common Public License v1.0 which accompanies this */
/* distribution. A copy is also available at the following address: */
/* http://www.oorexx.org/license.html */
/* */
/* Redistribution and use in source and binary forms, with or */
/* without modification, are permitted provided that the following */
/* conditions are met: */
/* */
/* Redistributions of source code must retain the above copyright */
/* notice, this list of conditions and the following disclaimer. */
/* Redistributions in binary form must reproduce the above copyright */
/* notice, this list of conditions and the following disclaimer in */
/* the documentation and/or other materials provided with the distribution. */
/* */
/* Neither the name of Rexx Language Association nor the names */
/* of its contributors may be used to endorse or promote products */
/* derived from this software without specific prior written permission. */
/* */
/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS */
/* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT */
/* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS */
/* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT */
/* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, */
/* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED */
/* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, */
/* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY */
/* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING */
/* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS */
/* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
/* */
/*----------------------------------------------------------------------------*/
/**
* DlgAreaDemoThree.Rex
*
* Demonstrates a second approach to resizable dialogs. Essentially what this
* approach does is to defer the redrawing of the dialog controls until the
* user has finished resizing the dialog.
*
* This example is exactly like DlgAreaDemoTwo.rex, except it also demonstrates
* how to prevent the user from resizing the dialog smaller than a minimum
* size. Look at the connectResizing() method in init() and the onResizing()
* method for the code that does this.
*
* To better understand this example completely, please read the header
* comments in the DlgAreaDemoTwo.rex example.
*/
.application~useGlobalConstDir("O", 'dlgAreaUDemo.h')
dlg = .ResizableDialog~new
dlg~execute('ShowTop')
return 0
::requires "ooDialog.cls"
::class 'ResizableDialog' subclass UserDialog
::method init
forward class (super) continue
success = self~createCenter(250, 250, 'My Flicker Free Resizable Dialog', -
'ThickFrame MinimizeBox MaximizeBox', , -
'MS Sans Serif', 8)
if \ success then do
self~initCode = 1
return
end
self~connectResize('onResize', .true)
self~connectResizing('onResizing')
self~connectSizeMoveEnded('onSizeMoveEnded')
::method defineDialog
expose u sizing minMaximized
u = .dlgAreaU~new(self)
if u~lastError \= .nil then call errorDialog u~lastError
-- Tell the DialogAreaU object to not invoke the update method.
u~updateOnResize = .false
-- We use these variables to track when to redraw, or not.
sizing = .false
minMaximized = .false
u~noResizePut(IDC_PB_0)
e = .dlgArea~new(u~x , u~y , u~w('70%'), u~h('90%')) -- edit area
s = .dlgArea~new(u~x , u~y('90%'), u~w('70%'), u~hr ) -- status area
b = .dlgArea~new(u~x('70%'), u~y , u~wr , u~hr ) -- button area
self~createEdit('IDC_EDIT', e~x, e~y, e~w, e~h, 'multiline')
self~createStaticText('IDC_ST_STATUS', s~x, s~y, s~w, s~h, , 'Status info appears here')
self~createPushButton('IDC_PB_0', b~x, b~y('00%'), b~w, b~h('9%'), , 'Button' 0 , 'Button'||0)
self~createPushButton('IDC_PB_1', b~x, b~y('10%'), b~w, b~h('9%'), , 'Button' 1 , 'Button'||1)
self~createPushButton('IDC_PB_2', b~x, b~y('20%'), b~w, b~h('9%'), , 'Button' 2 , 'Button'||2)
self~createPushButton('IDC_PB_3', b~x, b~y('30%'), b~w, b~h('9%'), , 'Button' 3 , 'Button'||3)
self~createPushButton('IDC_PB_4', b~x, b~y('40%'), b~w, b~h('9%'), , 'Button' 4 , 'Button'||4)
self~createPushButton('IDC_PB_5', b~x, b~y('50%'), b~w, b~h('9%'), , 'Button' 5 , 'Button'||5)
self~createPushButton('IDC_PB_6', b~x, b~y('60%'), b~w, b~h('9%'), , 'Button' 6 , 'Button'||6)
self~createPushButton('IDOK', b~x, b~y('90%'), b~w, b~h('9%'), 'DEFAULT', 'Ok')
::method initDialog
expose minWidth minHeight
-- The underlying edit controls internally resize themselves as the dialog
-- they are contained in is resized. We don't want that, so we disable that
-- behavior in the underlying edit control.
self~newEdit(IDC_EDIT)~disableInternalResize
-- We will restrict the minimum width and minimum height to our original
-- width and height
minWidth = self~pixelCX
minHeight = self~pixelCY
-- The RESIZING event happens when the user is resizing the dialog, but *before*
-- the size of the dialog is actually changed. The first arg is a .RECT object
-- that describes the new size. If we change the coordinates in the rectangle,
-- and reply .true. The new size of the dialog will be our changed coordinates.
--
-- Here, if the new size is smaller than we want, we just change the rectangle
-- coordinates to our minimum size. The 'direction' argument tells us which
-- edge of the dialog the user is dragging. We use that to decide which
-- coordinate(s) to change.
--
-- A maximum size for the dialog could be enforced in a similar way.
::method onResizing unguarded
expose minWidth minHeight
use arg r, direction
select
when direction == 'TOP' then do
if r~bottom - r~top < minHeight then do
r~top = r~bottom - minHeight
return .true
end
end
when direction == 'BOTTOM' then do
if r~bottom - r~top < minHeight then do
r~bottom = r~top + minHeight
return .true
end
end
when direction == 'LEFT' then do
if r~right - r~left < minWidth then do
r~left = r~right - minWidth
return .true
end
end
when direction == 'RIGHT' then do
if r~right - r~left < minWidth then do
r~right = r~left + minWidth
return .true
end
end
when direction == 'BOTTOMLEFT' then do
didChange = .false
if r~bottom - r~top < minHeight then do
r~bottom = r~top + minHeight
didChange = .true
end
if r~right - r~left < minWidth then do
r~left = r~right - minWidth
didChange = .true
end
return didChange
end
when direction == 'BOTTOMRIGHT' then do
didChange = .false
if r~bottom - r~top < minHeight then do
r~bottom = r~top + minHeight
didChange = .true
end
if r~right - r~left < minWidth then do
r~right = r~left + minWidth
didChange = .true
end
return didChange
end
when direction == 'TOPLEFT' then do
didChange = .false
if r~bottom - r~top < minHeight then do
r~top = r~bottom - minHeight
didChange = .true
end
if r~right - r~left < minWidth then do
r~left = r~right - minWidth
didChange = .true
end
return didChange
end
when direction == 'TOPRIGHT' then do
didChange = .false
if r~bottom - r~top < minHeight then do
r~top = r~bottom - minHeight
didChange = .true
end
if r~right - r~left < minWidth then do
r~right = r~left + minWidth
didChange = .true
end
return didChange
end
otherwise
nop
end
-- End select
return .false
::method onResize unguarded
expose u sizing minMaximized lastSizeInfo
use arg sizingType, sizeinfo
-- Save the size information so we know the final size of the dialog.
lastSizeInfo = sizeInfo
-- The size / move ended event does not occur when the user maximizes,
-- minimizes, or restores from maximized / minimized. Because of that, we
-- need to redraw the client area under those conditions.
if sizingType == self~SIZE_MAXIMIZED | sizingType == self~SIZE_MINIMIZED then do
minMaximized = .true
if sizingType == self~SIZE_MAXIMIZED then do
u~resize(self, sizeinfo)
self~redrawClient(.true)
end
end
else if sizingType == self~SIZE_RESTORED, minMaximized then do
minMaximized = .false
u~resize(self, sizeinfo)
self~redrawClient(.true)
end
else do
-- We are resizing now.
sizing = .true
end
return 0
::method onSizeMoveEnded unguarded
expose u sizing lastSizeInfo
say 'In onSizeMoveEnded'
do i = 1 to arg()
say 'arg' i':' arg(i)
end
-- If we were resizing, force the dialog controls to redraw themselves.
if sizing then do
u~resize(self, lastSizeInfo)
self~redrawClient(.true)
end
-- We are not resizing anymore.
sizing = .false
return 0
::method unknown
use arg msgName, args
if msgName~abbrev("BUTTON") then
self~newStatic(IDC_ST_STATUS)~setText('You Pressed Button' msgName~right(1))