154 lines
6.1 KiB
Rexx
Executable File
154 lines
6.1 KiB
Rexx
Executable File
/*----------------------------------------------------------------------------*/
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/* */
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/* Copyright (c) 1995, 2004 IBM Corporation. All rights reserved. */
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/* Copyright (c) 2014-2014 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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* Name: drawing5.rex
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* Type: Open Object REXX Script
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*
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* Description: Example demonstrating drawing functionality, using the
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* extended arguments sent to the DRAW event handler.
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*
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* Draws and updates the time, implementing a simple clock
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* interface.
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*/
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dlg = .OwnerDrawDlg~new
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if dlg~initCode <> 0 then return 99
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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 'OwnerDrawDlg' subclass UserDialog
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::method init
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expose timeFont circlePen pleaseQuit
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forward class (super) continue
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self~create(6, 15, 187, 135, "Owner-drawn Button Dialog", "CENTER")
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self~connectDraw(10, "drawIt", .true)
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-- Create a font to use to draw text with.
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properties = .directory~new
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properties~weight = 700
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properties~italic = .true
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timeFont = self~createFontEx("Arial", 24, properties)
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-- Create a pen to draw a circle with.
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circlePen = self~createPen(5, "SOLID", 1)
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pleaseQuit = .false
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::method defineDialog
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self~createPushButton(10, 6, 6, 175, 123, "OWNER", "")
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::method initDialog
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expose oneSecond oneSecondAlarm drawSurface
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drawSurface = self~newPushButton(10)
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oneSecond = .TimeSpan~fromSeconds(1)
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timerMsg = .Message~new(self, paint)
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oneSecondAlarm = .Alarm~new(oneSecond, timerMsg)
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::method paint unguarded
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expose oneSecond oneSecondAlarm drawSurface pleaseQuit
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if pleaseQuit then return
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reply
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drawSurface~update
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timerMsg = .Message~new(self, paint)
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oneSecondAlarm = .Alarm~new(oneSecond, timerMsg)
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::method drawIt unguarded
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expose timeFont circlePen
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use arg id, lp, drawObj, itemID, flags, dc, r, itemData
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now = .DateTime~new~normalTime
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-- Uncomment these lines for some insight as to what is happeninge to seen when the event handler is executed:
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-- say id lp drawObj itemID flags dc r itemData
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-- say 'Draw It'
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-- Erases the entire drawing surface, this could be improved, maybe, by only
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-- erasing what needs to be erased.
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self~rectangle(dc, r~left, r~top, r~right, r~bottom, 'FILL')
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oldPen = drawObj~objectToDc(dc, circlePen)
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oldFont = drawObj~fontToDC(dc, timeFont)
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drawObj~transparentText(dc)
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-- Get the midpoint of the button rectangle and set the text align to center
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pos = .Point~new(r~right % 2, r~bottom % 2)
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oldAlign = drawObj~setTextAlign(dc, 'CENTER BASELINE NOUPDATECP')
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-- Get a rectangle indented 5 from the button's area.
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dr = .Rect~new(r~left + 5, r~top + 5, r~right - 10, r~bottom - 10)
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-- Draw a circle, within the rectangle
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drawObj~drawArc(dc, dr~left, dr~top, dr~right, dr~bottom)
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-- Write the time at the position we calculated above.
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drawObj~writeDirect(dc, pos~x, pos~y, now)
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-- Now restore the DC so it is the same as passed into us.
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drawObj~setTextAlign(dc, oldAlign)
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drawObj~fontToDC(dc, oldFont)
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drawObj~objectToDc(dc, oldPen)
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drawObj~opaqueText(dc)
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return .true
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::method leaving
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expose timeFont circlePen
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self~deleteFont(timeFont)
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self~deleteObject(circlePen)
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::method cancel unguarded
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expose pleaseQuit oneSecondAlarm
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pleaseQuit = .true
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oneSecondAlarm~cancel
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return self~cancel:super
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