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Fix font clipping properly. Previous fix did not bound the font display in the x direction.

ugfx_release_2.6
inmarket 2014-02-03 17:58:43 +10:00
parent 71818b2942
commit de7aafe785
1 changed files with 21 additions and 3 deletions
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24
src/gdisp/gdisp.c
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@ -2769,8 +2769,14 @@ void gdispGDrawBox(GDisplay *g, coord_t x, coord_t y, coord_t cx, coord_t cy, co
#if GDISP_NEED_ANTIALIAS && GDISP_HARDWARE_PIXELREAD
static void drawcharline(int16_t x, int16_t y, uint8_t count, uint8_t alpha, void *state) {
#define GD ((GDisplay *)state)
if (y < GD->t.clipy0 || y >= GD->t.clipy1)
if (y < GD->t.clipy0 || y >= GD->t.clipy1 || x+count <= GD->t.clipx0 || x >= GD->t.clipx1)
return;
if (x < GD->t.clipx0) {
count -= GD->t.clipx0 - x;
x = GD->t.clipx0;
}
if (x+count > GD->t.clipx1)
count = GD->t.clipx1 - x;
if (alpha == 255) {
GD->p.x = x; GD->p.y = y; GD->p.x1 = x+count-1; GD->p.color = GD->t.color;
hline_clip(GD);
@ -2786,8 +2792,14 @@ void gdispGDrawBox(GDisplay *g, coord_t x, coord_t y, coord_t cx, coord_t cy, co
#else
static void drawcharline(int16_t x, int16_t y, uint8_t count, uint8_t alpha, void *state) {
#define GD ((GDisplay *)state)
if (y < GD->t.clipy0 || y >= GD->t.clipy1)
if (y < GD->t.clipy0 || y >= GD->t.clipy1 || x+count <= GD->t.clipx0 || x >= GD->t.clipx1)
return;
if (x < GD->t.clipx0) {
count -= GD->t.clipx0 - x;
x = GD->t.clipx0;
}
if (x+count > GD->t.clipx1)
count = GD->t.clipx1 - x;
if (alpha > 0x80) { // A best approximation when using anti-aliased fonts but we can't actually draw them anti-aliased
GD->p.x = x; GD->p.y = y; GD->p.x1 = x+count-1; GD->p.color = GD->t.color;
hline_clip(GD);
@ -2799,8 +2811,14 @@ void gdispGDrawBox(GDisplay *g, coord_t x, coord_t y, coord_t cx, coord_t cy, co
#if GDISP_NEED_ANTIALIAS
static void fillcharline(int16_t x, int16_t y, uint8_t count, uint8_t alpha, void *state) {
#define GD ((GDisplay *)state)
if (y < GD->t.clipy0 || y >= GD->t.clipy1)
if (y < GD->t.clipy0 || y >= GD->t.clipy1 || x+count <= GD->t.clipx0 || x >= GD->t.clipx1)
return;
if (x < GD->t.clipx0) {
count -= GD->t.clipx0 - x;
x = GD->t.clipx0;
}
if (x+count > GD->t.clipx1)
count = GD->t.clipx1 - x;
if (alpha == 255) {
GD->p.color = GD->t.color;
} else {