Attempting to draw low-density text on a high-density display seems to be a
crufty, but workable solution to the problem of displaying small text. What
I have written works partially - it renders low density text on an
off-screen window. It doesn't do what I /need/ it to - it pixeldoubles the
result to the destination window, and that just looks fugly. Anyone have
any ideas?
static void WinPaintCharsSmall (const Char *chars, Int16 len, Coord x, Coord
y) {
WinHandle tempWind, oldWindow;
Err Error;
BitmapPtr bmpP;
RectangleType r;
UInt16 oldCoord;
// First, do some setup.
oldCoord = WinSetCoordinateSystem(kCoordinatesStandard);
RctSetRectangle (&r, 0, 0, FntCharsWidth(chars, len), FntLineHeight());
// Step 1: Create an off-screen, low-density window.
tempWind = WinCreateOffscreenWindow (r.extent.x, r.extent.y,
genericFormat, &Error);
bmpP = WinGetBitmap (tempWind);
BmpSetDensity (bmpP, kDensityLow); // nessicary?
// Step 2: Switch to said window.
oldWindow = WinSetDrawWindow (tempWind);
// Step 3: Draw the text to our temporary window.
WinPaintChars (chars, len, 0, 0);
// Step 4: Switch back to the original window.
WinSetDrawWindow (oldWindow);
// Step 5: Change the density of the window to high density.
BmpSetDensity (bmpP, kDensityDouble); // not working?
// Step 6: Draw the temporary window to the active one.
WinSetCoordinateSystem(oldCoord);
WinCopyRectangle (tempWind, oldWindow, &r, x, y, winPaint);
// Step 7: Free the temporary window.
WinDeleteWindow (tempWind, false);
}
--
For information on using the Palm Developer Forums, or to unsubscribe, please see
http://www.palmos.com/dev/support/forums/
