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Treeview: Change bitmap generation to per-pixel channel indexing.

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This will be needed when the core bitmap layout is client controlled.
This commit is contained in:
Michael Drake 2022-03-25 20:18:13 +00:00
parent 7f6a00ad2b
commit 725d1c9911
1 changed files with 50 additions and 40 deletions
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90
desktop/treeview.c
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@ -5091,58 +5091,68 @@ treeview_generate_triangle_bitmap(colour bg, colour fg, int size)
if (y < size / 2) {
/* Top half */
for (x = 0; x < y * 2; x++) {
*(pos++) = red_from_colour(colour4);
*(pos++) = green_from_colour(colour4);
*(pos++) = blue_from_colour(colour4);
*(pos++) = 0xff;
pos[0] = red_from_colour(colour4);
pos[1] = green_from_colour(colour4);
pos[2] = blue_from_colour(colour4);
pos[3] = 0xff;
pos += 4;
}
*(pos++) = red_from_colour(colour3);
*(pos++) = green_from_colour(colour3);
*(pos++) = blue_from_colour(colour3);
*(pos++) = 0xff;
*(pos++) = red_from_colour(colour1);
*(pos++) = green_from_colour(colour1);
*(pos++) = blue_from_colour(colour1);
*(pos++) = 0xff;
pos[0] = red_from_colour(colour3);
pos[1] = green_from_colour(colour3);
pos[2] = blue_from_colour(colour3);
pos[3] = 0xff;
pos += 4;
pos[0] = red_from_colour(colour1);
pos[1] = green_from_colour(colour1);
pos[2] = blue_from_colour(colour1);
pos[3] = 0xff;
pos += 4;
for (x = y * 2 + 2; x < size ; x++) {
*(pos++) = red_from_colour(colour0);
*(pos++) = green_from_colour(colour0);
*(pos++) = blue_from_colour(colour0);
*(pos++) = 0xff;
pos[0] = red_from_colour(colour0);
pos[1] = green_from_colour(colour0);
pos[2] = blue_from_colour(colour0);
pos[3] = 0xff;
pos += 4;
}
} else if ((y == size / 2) && (size & 0x1)) {
/* Middle row */
for (x = 0; x < size - 1; x++) {
*(pos++) = red_from_colour(colour4);
*(pos++) = green_from_colour(colour4);
*(pos++) = blue_from_colour(colour4);
*(pos++) = 0xff;
pos[0] = red_from_colour(colour4);
pos[1] = green_from_colour(colour4);
pos[2] = blue_from_colour(colour4);
pos[3] = 0xff;
pos += 4;
}
*(pos++) = red_from_colour(colour2);
*(pos++) = green_from_colour(colour2);
*(pos++) = blue_from_colour(colour2);
*(pos++) = 0xff;
pos[0] = red_from_colour(colour2);
pos[1] = green_from_colour(colour2);
pos[2] = blue_from_colour(colour2);
pos[3] = 0xff;
pos += 4;
} else {
/* Bottom half */
for (x = 0; x < (size - y - 1) * 2; x++) {
*(pos++) = red_from_colour(colour4);
*(pos++) = green_from_colour(colour4);
*(pos++) = blue_from_colour(colour4);
*(pos++) = 0xff;
pos[0] = red_from_colour(colour4);
pos[1] = green_from_colour(colour4);
pos[2] = blue_from_colour(colour4);
pos[3] = 0xff;
pos += 4;
}
*(pos++) = red_from_colour(colour3);
*(pos++) = green_from_colour(colour3);
*(pos++) = blue_from_colour(colour3);
*(pos++) = 0xff;
*(pos++) = red_from_colour(colour1);
*(pos++) = green_from_colour(colour1);
*(pos++) = blue_from_colour(colour1);
*(pos++) = 0xff;
pos[0] = red_from_colour(colour3);
pos[1] = green_from_colour(colour3);
pos[2] = blue_from_colour(colour3);
pos[3] = 0xff;
pos += 4;
pos[0] = red_from_colour(colour1);
pos[1] = green_from_colour(colour1);
pos[2] = blue_from_colour(colour1);
pos[3] = 0xff;
pos += 4;
for (x = (size - y) * 2; x < size ; x++) {
*(pos++) = red_from_colour(colour0);
*(pos++) = green_from_colour(colour0);
*(pos++) = blue_from_colour(colour0);
*(pos++) = 0xff;
pos[0] = red_from_colour(colour0);
pos[1] = green_from_colour(colour0);
pos[2] = blue_from_colour(colour0);
pos[3] = 0xff;
pos += 4;
}
}