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UI/UX : clean up alert view borders

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This commit is contained in:
Aaron Culliney 2015-09-05 11:34:03 -07:00
parent 4f19ad3735
commit f05d1d0311
1 changed files with 45 additions and 0 deletions
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45
src/video/glalert.c
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@ -36,6 +36,16 @@ static void *_create_alert(void) {
return hudElement;
}
static inline void _set_alpha(unsigned int dstIdx) {
#if USE_RGBA4444
#error fixme verify ...
#else
PIXEL_TYPE rgba = *((PIXEL_TYPE *)(messageModel->texPixels + dstIdx));
rgba &= (~(0xFF << SHIFT_A));
*( (PIXEL_TYPE *)(messageModel->texPixels + dstIdx) ) = rgba;
#endif
}
static void _alertToModel(char *message, unsigned int messageCols, unsigned int messageRows) {
if (!message) {
return;
@ -75,6 +85,41 @@ static void _alertToModel(char *message, unsigned int messageCols, unsigned int
}
glhud_setupDefault(messageModel);
if (1) {
// HACK : removing opaque borders is based on well-known glyph bitmaps in font.txt
const unsigned int glyphTopBorder = 4;
const unsigned int glyphXBorder = 3;
const unsigned int heightMultiplier = 2; // each bitmap pixel is scaled 2x
const unsigned int pixStride = sizeof(PIXEL_TYPE);
unsigned int dstIdx=0;
// clean up top border
const unsigned int topBorderCount = (fbWidth * pixStride * ((glyphTopBorder*heightMultiplier)-1));
for (; dstIdx < topBorderCount; dstIdx+=pixStride) {
_set_alpha(dstIdx);
}
// clean up left and right edges
const unsigned int innerHeight = (fbHeight - /* 1/2 top and 1/2 bottom border: */FONT_HEIGHT_PIXELS) + (2*heightMultiplier);
const unsigned int lrBorderWidth = ((glyphXBorder-1) * pixStride);
for (unsigned int pixRow=0; pixRow<innerHeight; pixRow++) {
for (unsigned int ltIdx=0; ltIdx < (glyphXBorder-1); ltIdx++, dstIdx+=pixStride) {
_set_alpha(dstIdx);
}
dstIdx += (fbWidth * pixStride) - (lrBorderWidth*2);
for (unsigned int rtIdx=0; rtIdx < (glyphXBorder-1); rtIdx++, dstIdx+=pixStride) {
_set_alpha(dstIdx);
}
}
assert(dstIdx < (fbHeight * fbWidth * pixStride) && "overflow detected");
// clean up bottom border
for (; dstIdx<(fbHeight * fbWidth * pixStride); dstIdx+=pixStride) {
_set_alpha(dstIdx);
}
}
clock_gettime(CLOCK_MONOTONIC, &messageTimingBegin);
isEnabled = true;
return;