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add rtgui_image_hdcmm from memory HDC image.

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git-svn-id: https://rt-thread.googlecode.com/svn/trunk@736 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
bernard.xiong@gmail.com
2010-05-26 15:25:34 +00:00
parent e7e1a2a6a5
commit 94e758a2cd
4 changed files with 83 additions and 21 deletions
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50
components/rtgui/common/image_hdc.c
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@@ -2,6 +2,7 @@
#include <rtgui/dc_hw.h>
#include <rtgui/image.h>
#include <rtgui/rtgui_system.h>
#include <rtgui/image_hdc.h>
#define HDC_MAGIC_LEN 4
@@ -9,21 +10,22 @@ struct rtgui_image_hdc
{
rt_bool_t is_loaded;
struct rtgui_filerw* filerw;
struct rtgui_graphic_driver* hw_driver;
/* hdc image information */
rt_uint16_t byte_per_pixel;
rt_uint16_t pitch;
rt_size_t pixel_offset;
rt_uint8_t *pixels;
struct rtgui_filerw* filerw;
struct rtgui_graphic_driver* hw_driver;
};
static rt_bool_t rtgui_image_hdc_check(struct rtgui_filerw* file);
static rt_bool_t rtgui_image_hdc_load(struct rtgui_image* image, struct rtgui_filerw* file, rt_bool_t load);
static void rtgui_image_hdc_unload(struct rtgui_image* image);
static void rtgui_image_hdc_blit(struct rtgui_image* image, struct rtgui_dc* dc, struct rtgui_rect* rect);
static void rtgui_image_hdcmm_blit(struct rtgui_image* image, struct rtgui_dc* dc, struct rtgui_rect* dst_rect);
struct rtgui_image_engine rtgui_image_hdc_engine =
{
@@ -35,6 +37,16 @@ struct rtgui_image_engine rtgui_image_hdc_engine =
rtgui_image_hdc_blit
};
struct rtgui_image_engine rtgui_image_hdcmm_engine =
{
"hdcmm",
{RT_NULL},
{RT_NULL},
{RT_NULL},
{RT_NULL},
rtgui_image_hdcmm_blit
};
static rt_bool_t rtgui_image_hdc_check(struct rtgui_filerw* file)
{
int start;
@@ -186,8 +198,40 @@ static void rtgui_image_hdc_blit(struct rtgui_image* image, struct rtgui_dc* dc,
}
}
static void rtgui_image_hdcmm_blit(struct rtgui_image* image, struct rtgui_dc* dc, struct rtgui_rect* dst_rect)
{
rt_uint8_t* ptr;
rt_uint16_t y, w, h;
struct rtgui_image_hdcmm* hdc;
RT_ASSERT(image != RT_NULL || dc != RT_NULL || dst_rect != RT_NULL);
/* this dc is not visible */
if ((dc->get_visible(dc) != RT_TRUE) || (dc->type != RTGUI_DC_HW)) return;
hdc = (struct rtgui_image_hdcmm*) image;
RT_ASSERT(hdc != RT_NULL);
/* the minimum rect */
if (image->w < rtgui_rect_width(*dst_rect)) w = image->w;
else w = rtgui_rect_width(*dst_rect);
if (image->h < rtgui_rect_height(*dst_rect)) h = image->h;
else h = rtgui_rect_height(*dst_rect);
/* get pixel pointer */
ptr = hdc->pixels;
for (y = 0; y < h; y ++)
{
rtgui_dc_hw_draw_raw_hline((struct rtgui_dc_hw*)dc, ptr, dst_rect->x1, dst_rect->x1 + w, dst_rect->y1 + y);
ptr += hdc->pitch;
}
}
void rtgui_image_hdc_init()
{
/* register hdc on image system */
rtgui_image_register_engine(&rtgui_image_hdc_engine);
}