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Fontrenderer: Fixed error when rendering the font

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- Add comment for parameter 'useFullBg'
This commit is contained in:
Michael Liebmann
2013-07-23 06:17:45 +02:00
parent 7d1fd50cfb
commit ce91ca7f13
2 changed files with 26 additions and 18 deletions
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42
src/driver/fontrenderer.cpp
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@@ -365,13 +365,14 @@ int UTF8ToUnicode(const char * &text, const bool utf8_encoded) // returns -1 on
#define F_MUL 0x7FFF
void Font::paintFontPixel(fb_pixel_t *td, uint8_t fg_red, uint8_t fg_green, uint8_t fg_blue, fb_pixel_t bg_col, int faktor, fb_pixel_t fg_trans)
void Font::paintFontPixel(fb_pixel_t *td, uint8_t fg_trans, uint8_t fg_red, uint8_t fg_green, uint8_t fg_blue, fb_pixel_t bg_col, int faktor, uint8_t index)
{
int korr_t = ((bg_col & 0xFF000000) >> 24) - fg_trans;
int korr_r = ((bg_col & 0x00FF0000) >> 16) - fg_red;
int korr_g = ((bg_col & 0x0000FF00) >> 8) - fg_green;
int korr_b = (bg_col & 0x000000FF) - fg_blue;
*td = fg_trans |
*td = ((g_settings.contrast_fonts && (index > 128)) ? 0xFF000000 : (((fg_trans + ((korr_t*faktor)/F_MUL)) << 24) & 0xFF000000)) |
(((fg_red + ((korr_r*faktor)/F_MUL)) << 16) & 0x00FF0000) |
(((fg_green + ((korr_g*faktor)/F_MUL)) << 8) & 0x0000FF00) |
((fg_blue + ((korr_b*faktor)/F_MUL)) & 0x000000FF);
@@ -379,6 +380,18 @@ void Font::paintFontPixel(fb_pixel_t *td, uint8_t fg_red, uint8_t fg_green, uint
void Font::RenderString(int x, int y, const int width, const char *text, const fb_pixel_t color, const int boxheight, const bool utf8_encoded, const bool useFullBg)
{
/*
useFullBg (default = false)
useFullBg = false
fetch bgcolor from framebuffer, using lower left edge of the font
useFullBg = true
fetch bgcolor from framebuffer, using the respective real font position
- font rendering slower
- e.g. required for font rendering on images
*/
if (!frameBuffer->getActive())
return;
@@ -441,10 +454,9 @@ void Font::RenderString(int x, int y, const int width, const char *text, const f
FT_Vector kerning;
int pen1=-1; // "pen" positions for kerning, pen2 is "x"
static fb_pixel_t old_bgcolor = 0, old_fgcolor = 0;
static uint8_t fg_red = 0, fg_green = 0, fg_blue = 0;
static uint8_t fg_trans = 0, fg_red = 0, fg_green = 0, fg_blue = 0;
static bool olduseFullBg = false;
static fb_pixel_t colors[256] = {0};
static fb_pixel_t fg_trans[256] = {0};
static int faktor[256] = {0};
static bool fontRecsInit = false;
fb_pixel_t bg_color = 1;
@@ -468,14 +480,14 @@ void Font::RenderString(int x, int y, const int width, const char *text, const f
olduseFullBg = useFullBg;
fontRecsInit = true;
uint8_t fgt;
fgt = (fg_color & 0xFF000000) >> 24;
fg_trans = (fg_color & 0xFF000000) >> 24;
fg_red = (fg_color & 0x00FF0000) >> 16;
fg_green = (fg_color & 0x0000FF00) >> 8;
fg_blue = fg_color & 0x000000FF;
int korr_r=0, korr_g=0, korr_b=0;
int korr_t=0, korr_r=0, korr_g=0, korr_b=0;
if (!useFullBg) {
korr_t = ((bg_color & 0xFF000000) >> 24) - fg_trans;
korr_r = ((bg_color & 0x00FF0000) >> 16) - fg_red;
korr_g = ((bg_color & 0x0000FF00) >> 8) - fg_green;
korr_b = (bg_color & 0x000000FF) - fg_blue;
@@ -483,18 +495,14 @@ void Font::RenderString(int x, int y, const int width, const char *text, const f
for (int i = 0; i <= 0xFF; i++) {
int _faktor = ((0xFF - i) * F_MUL) / 0xFF;
fb_pixel_t _fg_trans = (g_settings.contrast_fonts && (i > 128)) ? 0xFF000000 : (fgt << 24) & 0xFF000000;
if (useFullBg) {
if (useFullBg)
faktor[i] = _faktor;
fg_trans[i] = _fg_trans;
}
else {
colors[i] = (_fg_trans |
else
colors[i] = ((g_settings.contrast_fonts && (i > 128)) ? 0xFF000000 : (((fg_trans + ((korr_t*_faktor)/F_MUL)) << 24) & 0xFF000000)) |
(((fg_red + ((korr_r*_faktor)/F_MUL)) << 16) & 0x00FF0000) |
(((fg_green + ((korr_g*_faktor)/F_MUL)) << 8) & 0x0000FF00) |
((fg_blue + ((korr_b*_faktor)/F_MUL)) & 0x000000FF));
}
((fg_blue + ((korr_b*_faktor)/F_MUL)) & 0x000000FF);
}
}
@@ -584,7 +592,7 @@ void Font::RenderString(int x, int y, const int width, const char *text, const f
/* do not paint the backgroundcolor (*s = 0) */
if(*s != 0) {
if (useFullBg)
paintFontPixel(td, fg_red, fg_green, fg_blue, bg_buf[ax*ay], faktor[*s], fg_trans[*s]);
paintFontPixel(td, fg_trans, fg_red, fg_green, fg_blue, bg_buf[ax*ay], faktor[*s], *s);
else
*td = colors[*s];
}
@@ -599,7 +607,7 @@ void Font::RenderString(int x, int y, const int width, const char *text, const f
/* do not paint the backgroundcolor (lcolor = 0) */
if(lcolor != 0) {
if (useFullBg)
paintFontPixel(td, fg_red, fg_green, fg_blue, bg_buf[ax*ay], faktor[lcolor], fg_trans[lcolor]);
paintFontPixel(td, fg_trans, fg_red, fg_green, fg_blue, bg_buf[ax*ay], faktor[lcolor], (uint8_t)lcolor);
else
*td = colors[lcolor];
}

2
src/driver/fontrenderer.h
View File

@@ -54,7 +54,7 @@ class Font
int height,DigitHeight,DigitOffset,ascender,descender,upper,lower;
int fontwidth;
inline void paintFontPixel(fb_pixel_t *td, uint8_t fg_red, uint8_t fg_green, uint8_t fg_blue, fb_pixel_t bg_col, int faktor, fb_pixel_t fg_trans);
inline void paintFontPixel(fb_pixel_t *td, uint8_t fg_trans, uint8_t fg_red, uint8_t fg_green, uint8_t fg_blue, fb_pixel_t bg_col, int faktor, uint8_t index);
public:
enum fontmodifier