diff options
Diffstat (limited to 'firmware/drivers/lcd-bitmap-common.c')
| -rw-r--r-- | firmware/drivers/lcd-bitmap-common.c | 39 |
1 files changed, 36 insertions, 3 deletions
diff --git a/firmware/drivers/lcd-bitmap-common.c b/firmware/drivers/lcd-bitmap-common.c index 5961bba..2b309ba 100644 --- a/firmware/drivers/lcd-bitmap-common.c +++ b/firmware/drivers/lcd-bitmap-common.c @@ -41,8 +41,21 @@ #endif #if defined(MAIN_LCD) && defined(HAVE_LCD_COLOR) -void lcd_gradient_fillrect(int x, int y, int width, int height, - unsigned start_rgb, unsigned end_rgb) +/* Fill a rectangle with a gradient. This function draws only the partial + * gradient. It assumes the original gradient is src_height high and skips + * the first few rows. This is useful for drawing only the bottom half of + * a full gradient. + * + * height == src_height and row_skip == 0 will draw the full gradient + * + * x, y, width, height - dimensions describing the rectangle + * start_rgb - beginning color of the gradient + * end_rgb - end color of the gradient + * src_height - assumed original height (only height rows will be drawn) + * row_skip - how many rows of the original gradient to skip + */ +void lcd_gradient_fillrect_part(int x, int y, int width, int height, + unsigned start_rgb, unsigned end_rgb, int src_height, int row_skip) { int old_pattern = current_vp->fg_pattern; int step_mul, i; @@ -52,7 +65,7 @@ void lcd_gradient_fillrect(int x, int y, int width, int height, if (height == 0) return; - step_mul = (1 << 16) / height; + step_mul = (1 << 16) / src_height; int h_r = RGB_UNPACK_RED(start_rgb); int h_g = RGB_UNPACK_GREEN(start_rgb); int h_b = RGB_UNPACK_BLUE(start_rgb); @@ -63,6 +76,13 @@ void lcd_gradient_fillrect(int x, int y, int width, int height, h_g = (h_g << 16) + (1 << 15); h_b = (h_b << 16) + (1 << 15); + if (row_skip > 0) + { + h_r -= rstep * row_skip; + h_g -= gstep * row_skip; + h_b -= bstep * row_skip; + } + for(i = y; i < y + height; i++) { current_vp->fg_pattern = LCD_RGBPACK(h_r >> 16, h_g >> 16, h_b >> 16); lcd_hline(x1, x2, i); @@ -74,6 +94,19 @@ void lcd_gradient_fillrect(int x, int y, int width, int height, current_vp->fg_pattern = old_pattern; } +/* Fill a rectangle with a gradient. The gradient's color will fade from + * start_rgb to end_rgb over the height of the rectangle + * + * x, y, width, height - dimensions describing the rectangle + * start_rgb - beginning color of the gradient + * end_rgb - end color of the gradient + */ +void lcd_gradient_fillrect(int x, int y, int width, int height, + unsigned start_rgb, unsigned end_rgb) +{ + lcd_gradient_fillrect_part(x, y, width, height, start_rgb, end_rgb, height, 0); +} + /* Fill a text line with a gradient: * x1, x2 - x pixel coordinates to start/stop * y - y pixel to start from |