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1dd1e6ca8d
Text can be drawn in a rect that cannot contain the whole character. Luckily, we have fillRectWithPixels handy to handle such cases.
36 lines
1.2 KiB
C++
36 lines
1.2 KiB
C++
#include <assert.h>
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#include <kandinsky/context.h>
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#include <kandinsky/font.h>
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constexpr int maxGlyphPixelCount = 180;
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constexpr static int k_tabCharacterWidth = 4;
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KDPoint KDContext::drawString(const char * text, KDPoint p, const KDFont * font, KDColor textColor, KDColor backgroundColor, int maxLength) {
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KDPoint position = p;
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KDSize glyphSize = font->glyphSize();
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KDFont::RenderPalette palette = font->renderPalette(textColor, backgroundColor);
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KDColor glyph[maxGlyphPixelCount];
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const char * end = text + maxLength;
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while(*text != 0 && text != end) {
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if (*text == '\n') {
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position = KDPoint(0, position.y() + glyphSize.height());
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} else if (*text == '\t') {
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position = position.translatedBy(KDPoint(k_tabCharacterWidth * glyphSize.width(), 0));
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} else {
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// Fetch and draw glyph for current char
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font->fetchGlyphForChar(*text, &palette, glyph);
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fillRectWithPixels(
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KDRect(position, glyphSize.width(), glyphSize.height()),
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glyph,
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glyph // It's OK to trash the content of glyph since we'll re-fetch it for the next char anyway
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);
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position = position.translatedBy(KDPoint(glyphSize.width(), 0));
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}
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text++;
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}
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return position;
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}
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