daniel/QTeletextMaker
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Implement Level 3.5 bold and italic font style

Browse Source 
Proportional font attributes are tracked within the decoder, but the effect
is not rendered.
This commit is contained in:
G.K.MacGregor
2023-05-21 15:33:21 +01:00
parent ed821bde45
commit 4b6ea4398d
4 changed files with 166 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

67
render.cpp
View File

@@ -73,6 +73,39 @@ void TeletextPageRender::setDecoder(TeletextPageDecode *decoder)
m_decoder = decoder;
}
inline void TeletextPageRender::drawFromBitmap(QPainter &pixmapPainter, int r, int c, const QBitmap bitmap, TeletextPageDecode::CharacterFragment characterFragment)
{
switch (characterFragment) {
case TeletextPageDecode::NormalSize:
pixmapPainter.drawPixmap(c*12, r*10, bitmap);
break;
case TeletextPageDecode::DoubleHeightTopHalf:
pixmapPainter.drawPixmap(c*12, r*10, 12, 10, bitmap, 0, 0, 12, 5);
break;
case TeletextPageDecode::DoubleHeightBottomHalf:
pixmapPainter.drawPixmap(c*12, r*10, 12, 10, bitmap, 0, 5, 12, 5);
break;
case TeletextPageDecode::DoubleWidthLeftHalf:
pixmapPainter.drawPixmap(c*12, r*10, 12, 10, bitmap, 0, 0, 6, 10);
break;
case TeletextPageDecode::DoubleWidthRightHalf:
pixmapPainter.drawPixmap(c*12, r*10, 12, 10, bitmap, 6, 0, 6, 10);
break;
case TeletextPageDecode::DoubleSizeTopLeftQuarter:
pixmapPainter.drawPixmap(c*12, r*10, 12, 10, bitmap, 0, 0, 6, 5);
break;
case TeletextPageDecode::DoubleSizeTopRightQuarter:
pixmapPainter.drawPixmap(c*12, r*10, 12, 10, bitmap, 6, 0, 6, 5);
break;
case TeletextPageDecode::DoubleSizeBottomLeftQuarter:
pixmapPainter.drawPixmap(c*12, r*10, 12, 10, bitmap, 0, 5, 6, 5);
break;
case TeletextPageDecode::DoubleSizeBottomRightQuarter:
pixmapPainter.drawPixmap(c*12, r*10, 12, 10, bitmap, 6, 5, 6, 5);
break;
}
}
inline void TeletextPageRender::drawFromFontBitmap(QPainter &pixmapPainter, int r, int c, unsigned char characterCode, int characterSet, TeletextPageDecode::CharacterFragment characterFragment)
{
switch (characterFragment) {
@@ -152,6 +185,8 @@ inline void TeletextPageRender::drawCharacter(QPainter &pixmapPainter, int r, in
pixmapPainter.fillRect(c*12, r*10, 12, 10, pixmapPainter.background().color());
else if (characterCode == 0x7f && characterSet == 24)
pixmapPainter.fillRect(c*12, r*10, 12, 10, pixmapPainter.pen().color());
else if ((m_decoder->cellBold(r, c) || m_decoder->cellItalic(r, c)) && characterSet < 24)
drawBoldOrItalicCharacter(pixmapPainter, r, c, characterCode, characterSet, characterFragment);
else
drawFromFontBitmap(pixmapPainter, r, c, characterCode, characterSet, characterFragment);
@@ -182,6 +217,38 @@ inline void TeletextPageRender::drawCharacter(QPainter &pixmapPainter, int r, in
pixmapPainter.setCompositionMode(QPainter::CompositionMode_SourceOver);
}
inline void TeletextPageRender::drawBoldOrItalicCharacter(QPainter &pixmapPainter, int r, int c, unsigned char characterCode, int characterSet, TeletextPageDecode::CharacterFragment characterFragment)
{
QBitmap bitmap = QBitmap(12, 10);
QPainter bitmapPainter;
// TODO italic glyph-making is VERY slow!
if (m_decoder->cellItalic(r, c)) {
bitmap.clear();
bitmapPainter.begin(&bitmap);
bitmapPainter.setBackgroundMode(Qt::OpaqueMode);
bitmapPainter.drawPixmap(1, 0, *m_fontBitmap.rawBitmap(), (characterCode-32)*12, characterSet*10, 11, 3);
bitmapPainter.drawPixmap(0, 3, *m_fontBitmap.rawBitmap(), (characterCode-32)*12, characterSet*10+3, 12, 3);
bitmapPainter.drawPixmap(0, 6, *m_fontBitmap.rawBitmap(), (characterCode-32)*12+1, characterSet*10+6, 11, 4);
bitmapPainter.end();
} else
bitmap = m_fontBitmap.rawBitmap()->copy((characterCode-32)*12, characterSet*10, 12, 10);
if (m_decoder->cellBold(r, c)) {
QBitmap boldeningBitmap;
boldeningBitmap = bitmap.copy();
bitmapPainter.begin(&bitmap);
// No idea why we need this setPen workaround when character is made italic first?!
if (!m_decoder->cellItalic(r, c))
bitmapPainter.setPen(Qt::color0);
bitmapPainter.drawPixmap(1, 0, boldeningBitmap);
bitmapPainter.end();
}
drawFromBitmap(pixmapPainter, r, c, bitmap, characterFragment);
}
void TeletextPageRender::renderPage(bool force)
{
for (int r=0; r<25; r++)