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FS-7506: fix pen position and add mono font support

This commit is contained in:
Seven Du 2015-02-12 11:38:37 +08:00 committed by Michael Jerris
parent 0b496715f9
commit 187b0c1485
1 changed files with 33 additions and 14 deletions
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47
src/switch_core_video.c
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@ -297,7 +297,7 @@ struct switch_img_txt_handle_s {
};
SWITCH_DECLARE(switch_status_t) switch_img_txt_handle_create(switch_img_txt_handle_t **handleP, const char *font_family,
SWITCH_DECLARE(switch_status_t) switch_img_txt_handle_create(switch_img_txt_handle_t **handleP, const char *font_family,
const char *font_color, uint16_t font_size, double angle, switch_memory_pool_t *pool)
{
int free_pool = 0;
@ -321,7 +321,7 @@ SWITCH_DECLARE(switch_status_t) switch_img_txt_handle_create(switch_img_txt_hand
new_handle->angle = angle;
switch_color_set(&new_handle->color, font_color);
*handleP = new_handle;
return SWITCH_STATUS_SUCCESS;
@ -334,7 +334,7 @@ SWITCH_DECLARE(void) switch_img_txt_handle_destroy(switch_img_txt_handle_t **han
switch_memory_pool_t *pool;
*handleP = NULL;
if (old_handle->library) {
FT_Done_FreeType(old_handle->library);
old_handle->library = NULL;
@ -356,11 +356,27 @@ static void draw_bitmap(switch_image_t *img, FT_Bitmap* bitmap, FT_Int x, FT_Int
FT_Int x_max = x + bitmap->width;
FT_Int y_max = y + bitmap->rows;
if (bitmap->width == 0) return;
switch (bitmap->pixel_mode) {
case FT_PIXEL_MODE_GRAY: // it should always be GRAY since we use FT_LOAD_RENDER?
break;
case FT_PIXEL_MODE_NONE:
case FT_PIXEL_MODE_MONO:
for ( j = y, q = 0; j < y_max; j++, q++ ) {
for ( i = x, p = 0; i < x_max; i++, p++ ) {
uint8_t byte;
int linesize = ((bitmap->width - 1) / 8 + 1) * 8;
if ( i < 0 || j < 0 || i >= img->d_w || j >= img->d_h) continue;
byte = bitmap->buffer[(q * linesize + p) / 8];
if ((byte >> (7 - (p % 8))) & 0x1) {
switch_img_draw_pixel(img, i, j, color);
}
}
}
return;
case FT_PIXEL_MODE_GRAY2:
case FT_PIXEL_MODE_GRAY4:
case FT_PIXEL_MODE_LCD:
@ -381,8 +397,8 @@ static void draw_bitmap(switch_image_t *img, FT_Bitmap* bitmap, FT_Int x, FT_Int
}
SWITCH_DECLARE(switch_status_t) switch_img_txt_handle_render(switch_img_txt_handle_t *handle, switch_image_t *img,
int x, int y, const char *text,
SWITCH_DECLARE(switch_status_t) switch_img_txt_handle_render(switch_img_txt_handle_t *handle, switch_image_t *img,
int x, int y, const char *text,
const char *font_family, const char *font_color, uint16_t font_size, double angle)
{
FT_GlyphSlot slot;
@ -407,7 +423,7 @@ SWITCH_DECLARE(switch_status_t) switch_img_txt_handle_render(switch_img_txt_hand
} else {
font_size = handle->font_size;
}
if (font_color) {
switch_color_set(&handle->color, font_color);
}
@ -419,7 +435,10 @@ SWITCH_DECLARE(switch_status_t) switch_img_txt_handle_render(switch_img_txt_hand
target_height = img->d_h;
error = FT_New_Face(handle->library, font_family, 0, &face); /* create face object */
if (error) {printf("WTF %s %d\n", font_family, __LINE__); return SWITCH_STATUS_FALSE;}
if (error) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Unable to open font %s\n", font_family);
return SWITCH_STATUS_FALSE;
}
/* use 50pt at 100dpi */
error = FT_Set_Char_Size(face, 64 * font_size, 0, 96, 96); /* set character size */
@ -433,15 +452,15 @@ SWITCH_DECLARE(switch_status_t) switch_img_txt_handle_render(switch_img_txt_hand
matrix.yx = (FT_Fixed)( sin( angle ) * 0x10000L );
matrix.yy = (FT_Fixed)( cos( angle ) * 0x10000L );
pen.x = x * 64;
pen.y = (target_height - y) * 64;
pen.x = x;
pen.y = y;
while(*(text + index)) {
ch = switch_u8_get_char((char *)text, &index);
if (ch == '\n') {
pen.x = x * 64;
pen.y -= (font_size + font_size / 4) * 64;
pen.x = x;
pen.y += (font_size + font_size / 4);
continue;
}
@ -453,11 +472,11 @@ SWITCH_DECLARE(switch_status_t) switch_img_txt_handle_render(switch_img_txt_hand
if (error) continue;
/* now, draw to our target surface (convert position) */
draw_bitmap(img, &slot->bitmap, slot->bitmap_left, target_height - slot->bitmap_top + font_size, handle->color);
draw_bitmap(img, &slot->bitmap, pen.x + slot->bitmap_left, pen.y - slot->bitmap_top + font_size, handle->color);
/* increment pen position */
pen.x += slot->advance.x;
pen.y += slot->advance.y;
pen.x += slot->advance.x >> 6;
pen.y += slot->advance.y >> 6;
}
FT_Done_Face(face);