rexx-things/modules/windows/oodialog/tutorial/drawing3.rex
2025-03-12 20:50:48 +00:00

138 lines
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Rexx
Executable File

/*----------------------------------------------------------------------------*/
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/*----------------------------------------------------------------------------*/
/**
* Name: drawing3.rex
* Type: Open Object REXX Script
*
* Description: Example demonstrating drawing functionality, using the
* extended arguments sent to the DRAW event handler.
*/
sd = locate()
dlg = .MyDialogClass~new(sd"drawings.rc", 100)
if dlg~initCode <> 0 then return 99
dlg~execute("SHOWTOP")
return 0
::requires "ooDialog.cls"
::class 'MyDialogClass' subclass RcDialog
::attribute graphicObject
::method init
forward class (super) continue
if self~initCode <> 0 then return self~initCode
self~connectButtonEvent(11, "CLICKED", "circle")
self~connectButtonEvent(12, "CLICKED", "myRectangle")
self~connectDraw(10, "drawIt", .true)
self~graphicObject = "NONE"
return self~initCode
::method drawIt unguarded
use arg id, lp, drawObj, itemID, flags, dc, r, itemData
if self~graphicObject = "NONE" then return .true
if self~graphicObject = "CIRCLE" then do
pen = drawObj~createPen(5, "SOLID", 1)
end
else do
pen = drawObj~createPen(8, "SOLID", 2)
end
oldPen = drawObj~objectToDc(dc, pen)
properties = .directory~new
properties~weight = 700
properties~italic = .true
font = drawObj~createFontEx("Arial", 24, properties)
oldFont = drawObj~fontToDC(dc, font)
drawObj~transparentText(dc)
-- Get the midpoint of the button rectangle and set the text align to center
pos = .Point~new(r~right % 2, r~bottom % 2)
oldAlign = drawObj~setTextAlign(dc, 'CENTER BASELINE NOUPDATECP')
-- Get a draw rectangle indented 5 from the button's area.
dr = .Rect~new(r~left + 5, r~top + 5, r~right - 10, r~bottom - 10)
if self~graphicObject = "CIRCLE" then do
-- Draw the circle, within our draw rectangle
drawObj~drawArc(dc, dr~left, dr~top, dr~right, dr~bottom)
end
else do
-- Draw the rectangle, indented like the circle above.
drawObj~rectangle(dc, dr~left, dr~top, dr~right, dr~bottom)
end
-- Write the text at the position we calculated above.
drawObj~writeDirect(dc, pos~x, pos~y, self~graphicObject)
-- Now restore the DC so it is the same as passed into us.
drawObj~setTextAlign(dc, oldAlign)
drawObj~fontToDC(dc, oldFont)
drawObj~objectToDc(dc, oldPen)
drawObj~opaqueText(dc)
drawObj~deleteFont(font)
drawObj~deleteObject(pen)
return .true
::method circle unguarded
self~graphicObject = "CIRCLE"
self~redrawControl(10, 1)
::method myRectangle unguarded
self~graphicObject = "RECTANGLE"
self~redrawControl(10, 1)