chinky/rtt-f030
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fix buffered dc blit issue.

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git-svn-id: https://rt-thread.googlecode.com/svn/trunk@845 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
bernard.xiong@gmail.com 2010-08-11 13:59:10 +00:00
parent 084a39897f
commit 0c2f85b5fb
1 changed files with 35 additions and 25 deletions
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60
components/rtgui/common/dc_buffer.c
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@ -18,6 +18,8 @@
#include <rtgui/color.h>
#include <rtgui/rtgui_system.h>
#define hw_driver (rtgui_graphic_driver_get_default())
struct rtgui_dc_buffer
{
struct rtgui_dc parent;
@ -215,16 +217,14 @@ static void rtgui_dc_buffer_blit(struct rtgui_dc* self, struct rtgui_point* dc_p
struct rtgui_dc* hw = dest;
if (dc_point == RT_NULL) dc_point = &rtgui_empty_point;
if (rtgui_dc_get_visible(dest) == RT_FALSE) return;
if ((dest->type == RTGUI_DC_HW) || (dest->type == RTGUI_DC_CLIENT))
{
rtgui_color_t* pixel;
rt_uint8_t *line_ptr;
rt_uint16_t rect_width, rect_height, index;
rt_uint8_t *line_ptr, *pixels;
rt_uint16_t rect_width, rect_height, index, pitch;
rtgui_blit_line_func blit_line;
if (rtgui_dc_get_visible(hw) == RT_FALSE) return;
/* calculate correct width and height */
if (rtgui_rect_width(*rect) > (dc->width - dc_point->x))
rect_width = dc->width - dc_point->x;
@ -236,31 +236,41 @@ static void rtgui_dc_buffer_blit(struct rtgui_dc* self, struct rtgui_point* dc_p
else
rect_height = rtgui_rect_height(*rect);
/* get blit line function */
blit_line = rtgui_blit_line_get(rtgui_graphic_driver_get_default()->byte_per_pixel, 4);
/* create line buffer */
line_ptr = (rt_uint8_t*) rtgui_malloc(rect_width * rtgui_graphic_driver_get_default()->byte_per_pixel);
/* prepare pixel line */
pixel = (rtgui_color_t*)(dc->pixel + dc_point->y * dc->pitch + dc_point->x * sizeof(rtgui_color_t));
pixels = dc->pixel + dc_point->y * dc->pitch + dc_point->x * sizeof(rtgui_color_t);
/* calculate pitch */
rect_width = rect_width * rtgui_graphic_driver_get_default()->byte_per_pixel;
/* draw each line */
for (index = rect->y1; index < rect->y1 + rect_height; index ++)
if (hw_driver->byte_per_pixel == sizeof(rtgui_color_t))
{
/* blit on line buffer */
blit_line(line_ptr, (rt_uint8_t*)pixel, rect_width);
pixel += dc->width;
/* draw on hardware dc */
rtgui_dc_client_draw_raw_hline(hw, line_ptr, rect->x1, rect->x1 + rect_width, index);
/* it's the same byte per pixel, draw it directly */
for (index = rect->y1; index < rect->y1 + rect_height; index++)
{
rtgui_dc_client_draw_raw_hline(hw, pixels, rect->x1, rect->x1 + rect_width, index);
pixels += dc->width * sizeof(rtgui_color_t);
}
}
else
{
/* get blit line function */
blit_line = rtgui_blit_line_get(hw_driver->byte_per_pixel, 4);
/* calculate pitch */
pitch = rect_width * sizeof(rtgui_color_t);
/* create line buffer */
line_ptr = (rt_uint8_t*) rtgui_malloc(rect_width * hw_driver->byte_per_pixel);
/* release line buffer */
rtgui_free(line_ptr);
/* draw each line */
for (index = rect->y1; index < rect->y1 + rect_height; index ++)
{
/* blit on line buffer */
blit_line(line_ptr, (rt_uint8_t*)pixels, pitch);
pixels += dc->width * sizeof(rtgui_color_t);
/* draw on hardware dc */
rtgui_dc_client_draw_raw_hline(hw, line_ptr, rect->x1, rect->x1 + rect_width, index);
}
/* release line buffer */
rtgui_free(line_ptr);
}
}
}