283 lines
10 KiB
Rexx
283 lines
10 KiB
Rexx
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/*----------------------------------------------------------------------------*/
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/* */
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/* Copyright (c) 2006-2014 Rexx Language Association. All rights reserved. */
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/* */
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/* This program and the accompanying materials are made available under */
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/* the terms of the Common Public License v1.0 which accompanies this */
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/* distribution. A copy is also available at the following address: */
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/* https://www.oorexx.org/license.html */
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/* */
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/* Redistribution and use in source and binary forms, with or */
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/* without modification, are permitted provided that the following */
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/* conditions are met: */
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/* */
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/* Redistributions of source code must retain the above copyright */
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/* notice, this list of conditions and the following disclaimer. */
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/* Redistributions in binary form must reproduce the above copyright */
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/* notice, this list of conditions and the following disclaimer in */
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/* the documentation and/or other materials provided with the distribution. */
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/* */
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/* Neither the name of Rexx Language Association nor the names */
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/* of its contributors may be used to endorse or promote products */
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/* derived from this software without specific prior written permission. */
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/* */
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/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS */
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/* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT */
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/* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS */
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/* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT */
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/* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, */
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/* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED */
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/* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, */
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/* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY */
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/* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING */
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/* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS */
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/* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
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/* */
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/*----------------------------------------------------------------------------*/
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/**
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* DlgAreaDemoThree.Rex
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*
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* Demonstrates a second approach to resizable dialogs. Essentially what this
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* approach does is to defer the redrawing of the dialog controls until the
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* user has finished resizing the dialog.
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*
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* This example is exactly like DlgAreaDemoTwo.rex, except it also demonstrates
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* how to prevent the user from resizing the dialog smaller than a minimum
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* size. Look at the connectResizing() method in init() and the onResizing()
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* method for the code that does this.
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*
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* To better understand this example completely, please read the header
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* comments in the DlgAreaDemoTwo.rex example.
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*/
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sd = locate()
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.application~useGlobalConstDir("O", sd'dlgAreaUDemo.h')
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dlg = .ResizableDialog~new
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dlg~execute('ShowTop')
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return 0
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::requires "ooDialog.cls"
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::class 'ResizableDialog' subclass UserDialog
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::method init
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forward class (super) continue
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success = self~createCenter(250, 250, 'My Flicker Free Resizable Dialog', -
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'ThickFrame MinimizeBox MaximizeBox', , -
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'MS Sans Serif', 8)
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if \ success then do
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self~initCode = 1
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return
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end
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self~connectResize('onResize', .true)
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self~connectResizing('onResizing')
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self~connectSizeMoveEnded('onSizeMoveEnded')
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::method defineDialog
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expose u sizing minMaximized
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u = .dlgAreaU~new(self)
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if u~lastError \= .nil then call errorDialog u~lastError
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-- Tell the DialogAreaU object to not invoke the update method.
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u~updateOnResize = .false
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-- We use these variables to track when to redraw, or not.
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sizing = .false
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minMaximized = .false
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u~noResizePut(IDC_PB_0)
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e = .dlgArea~new(u~x , u~y , u~w('70%'), u~h('90%')) -- edit area
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s = .dlgArea~new(u~x , u~y('90%'), u~w('70%'), u~hr ) -- status area
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b = .dlgArea~new(u~x('70%'), u~y , u~wr , u~hr ) -- button area
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self~createEdit('IDC_EDIT', e~x, e~y, e~w, e~h, 'multiline')
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self~createStaticText('IDC_ST_STATUS', s~x, s~y, s~w, s~h, , 'Status info appears here')
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self~createPushButton('IDC_PB_0', b~x, b~y('00%'), b~w, b~h('9%'), , 'Button' 0 , 'Button'||0)
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self~createPushButton('IDC_PB_1', b~x, b~y('10%'), b~w, b~h('9%'), , 'Button' 1 , 'Button'||1)
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self~createPushButton('IDC_PB_2', b~x, b~y('20%'), b~w, b~h('9%'), , 'Button' 2 , 'Button'||2)
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self~createPushButton('IDC_PB_3', b~x, b~y('30%'), b~w, b~h('9%'), , 'Button' 3 , 'Button'||3)
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self~createPushButton('IDC_PB_4', b~x, b~y('40%'), b~w, b~h('9%'), , 'Button' 4 , 'Button'||4)
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self~createPushButton('IDC_PB_5', b~x, b~y('50%'), b~w, b~h('9%'), , 'Button' 5 , 'Button'||5)
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self~createPushButton('IDC_PB_6', b~x, b~y('60%'), b~w, b~h('9%'), , 'Button' 6 , 'Button'||6)
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self~createPushButton('IDOK', b~x, b~y('90%'), b~w, b~h('9%'), 'DEFAULT', 'Ok')
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::method initDialog
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expose minWidth minHeight
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-- The underlying edit controls internally resize themselves as the dialog
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-- they are contained in is resized. We don't want that, so we disable that
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-- behavior in the underlying edit control.
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self~newEdit(IDC_EDIT)~disableInternalResize
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-- We will restrict the minimum width and minimum height to our original
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-- width and height
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minWidth = self~pixelCX
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minHeight = self~pixelCY
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-- The RESIZING event happens when the user is resizing the dialog, but *before*
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-- the size of the dialog is actually changed. The first arg is a .RECT object
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-- that describes the new size. If we change the coordinates in the rectangle,
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-- and reply .true. The new size of the dialog will be our changed coordinates.
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--
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-- Here, if the new size is smaller than we want, we just change the rectangle
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-- coordinates to our minimum size. The 'direction' argument tells us which
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-- edge of the dialog the user is dragging. We use that to decide which
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-- coordinate(s) to change.
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--
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-- A maximum size for the dialog could be enforced in a similar way.
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::method onResizing unguarded
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expose minWidth minHeight
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use arg r, direction
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select
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when direction == 'TOP' then do
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if r~bottom - r~top < minHeight then do
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r~top = r~bottom - minHeight
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return .true
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end
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end
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when direction == 'BOTTOM' then do
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if r~bottom - r~top < minHeight then do
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r~bottom = r~top + minHeight
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return .true
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end
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end
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when direction == 'LEFT' then do
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if r~right - r~left < minWidth then do
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r~left = r~right - minWidth
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return .true
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end
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end
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when direction == 'RIGHT' then do
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if r~right - r~left < minWidth then do
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r~right = r~left + minWidth
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return .true
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end
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end
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when direction == 'BOTTOMLEFT' then do
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didChange = .false
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if r~bottom - r~top < minHeight then do
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r~bottom = r~top + minHeight
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didChange = .true
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end
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if r~right - r~left < minWidth then do
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r~left = r~right - minWidth
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didChange = .true
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end
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return didChange
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end
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when direction == 'BOTTOMRIGHT' then do
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didChange = .false
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if r~bottom - r~top < minHeight then do
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r~bottom = r~top + minHeight
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didChange = .true
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end
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if r~right - r~left < minWidth then do
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r~right = r~left + minWidth
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didChange = .true
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end
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return didChange
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end
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when direction == 'TOPLEFT' then do
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didChange = .false
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if r~bottom - r~top < minHeight then do
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r~top = r~bottom - minHeight
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didChange = .true
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end
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if r~right - r~left < minWidth then do
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r~left = r~right - minWidth
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didChange = .true
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end
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return didChange
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end
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when direction == 'TOPRIGHT' then do
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didChange = .false
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if r~bottom - r~top < minHeight then do
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r~top = r~bottom - minHeight
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didChange = .true
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end
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if r~right - r~left < minWidth then do
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r~right = r~left + minWidth
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didChange = .true
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end
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return didChange
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end
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otherwise
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nop
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end
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-- End select
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return .false
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::method onResize unguarded
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expose u sizing minMaximized lastSizeInfo
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use arg sizingType, sizeinfo
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-- Save the size information so we know the final size of the dialog.
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lastSizeInfo = sizeInfo
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-- The size / move ended event does not occur when the user maximizes,
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-- minimizes, or restores from maximized / minimized. Because of that, we
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-- need to redraw the client area under those conditions.
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if sizingType == self~SIZE_MAXIMIZED | sizingType == self~SIZE_MINIMIZED then do
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minMaximized = .true
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if sizingType == self~SIZE_MAXIMIZED then do
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u~resize(self, sizeinfo)
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self~redrawClient(.true)
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end
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end
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else if sizingType == self~SIZE_RESTORED, minMaximized then do
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minMaximized = .false
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u~resize(self, sizeinfo)
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self~redrawClient(.true)
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end
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else do
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-- We are resizing now.
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sizing = .true
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end
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return 0
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::method onSizeMoveEnded unguarded
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expose u sizing lastSizeInfo
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-- If we were resizing, force the dialog controls to redraw themselves.
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if sizing then do
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u~resize(self, lastSizeInfo)
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self~redrawClient(.true)
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end
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-- We are not resizing anymore.
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sizing = .false
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return 0
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::method unknown
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use arg msgName, args
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if msgName~abbrev("BUTTON") then
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self~newStatic(IDC_ST_STATUS)~setText('You Pressed Button' msgName~right(1))
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