uGFX/ugfx
2
0
Fork 0
Code Issues 2 Pull Requests Projects Releases Wiki Activity

Improving Pixmap API

Browse Source
This commit is contained in:
Joel Bodenmann 2015-07-03 17:08:28 +02:00
parent 23a603dd0d
commit 380c41b766
3 changed files with 17 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
demos/modules/gdisp/pixmap/main.c
View File

@ -32,8 +32,8 @@
#define PIXMAP_WIDTH 40
#define PIXMAP_HEIGHT 10
static GDisplay *pix;
static pixel_t *surface;
static GDisplay* pixmap;
static pixel_t* surface;
int main(void) {
coord_t width, height;
@ -47,8 +47,8 @@ int main(void) {
height = gdispGetHeight();
// Create a pixmap and get a pointer to the bits
pix = gdispCreatePixmap(PIXMAP_WIDTH, PIXMAP_HEIGHT);
surface = gdispGetPixmapBits(pix);
pixmap = gdispPixmapCreate(PIXMAP_WIDTH, PIXMAP_HEIGHT);
surface = gdispPixmapGetBits(pixmap);
// A pixmap can be treated either as a virtual display or as a memory framebuffer surface.
// We demonstrate writing to it using both methods.
@ -59,7 +59,7 @@ int main(void) {
surface[j*PIXMAP_WIDTH + i] = RGB2COLOR(0, 255-i*(256/PIXMAP_WIDTH), j*(256/PIXMAP_HEIGHT));
// Secondly, show drawing a line on it like a virtual display
gdispGDrawLine(pix, 0, 0, gdispGGetWidth(pix)-1, gdispGGetHeight(pix)-1, White);
gdispGDrawLine(pixmap, 0, 0, gdispGGetWidth(pixmap)-1, gdispGGetHeight(pixmap)-1, White);
i = j = 0;
while(TRUE) {
@ -78,6 +78,9 @@ int main(void) {
// Wait
gfxSleepMilliseconds(100);
}
}
// Clean up
gdispPixmapDelete(pixmap);
}

8
src/gdisp/gdisp_pixmap.c
View File

@ -49,7 +49,7 @@ typedef struct pixmap {
color_t pixels[1]; // We really want pixels[0] but some compilers don't allow that even though it is C standard.
} pixmap;
GDisplay *gdispCreatePixmap(coord_t width, coord_t height) {
GDisplay *gdispPixmapCreate(coord_t width, coord_t height) {
GDisplay *g;
pixmap *p;
unsigned i;
@ -86,20 +86,20 @@ GDisplay *gdispCreatePixmap(coord_t width, coord_t height) {
return g;
}
void gdispDeletePixmap(GDisplay *g) {
void gdispPixmapDelete(GDisplay *g) {
if (gvmt(g) != GDISPVMT_pixmap)
return;
gdriverUnRegister(&g->d);
}
pixel_t *gdispGetPixmapBits(GDisplay *g) {
pixel_t *gdispPixmapGetBits(GDisplay *g) {
if (gvmt(g) != GDISPVMT_pixmap)
return 0;
return ((pixmap *)g->priv)->pixels;
}
#if GDISP_NEED_PIXMAP_IMAGE
void *gdispGetPixmapMemoryImage(GDisplay *g) {
void *gdispPixmapGetMemoryImage(GDisplay *g) {
if (gvmt(g) != GDISPVMT_pixmap)
return 0;
return ((pixmap *)g->priv)->imghdr;

8
src/gdisp/gdisp_pixmap.h
View File

@ -40,7 +40,7 @@ extern "C" {
* @note Because the RAM for the display area is allocated, on small micros only very small pixmaps should be considered.
* For example a 100x100 at 16 bits per pixel would be 20K of RAM (plus some overheads).
*/
GDisplay *gdispCreatePixmap(coord_t width, coord_t height);
GDisplay *gdispPixmapCreate(coord_t width, coord_t height);
/**
* @brief Destroy an off-screen pixmap
@ -49,7 +49,7 @@ extern "C" {
*
* @note If a normal display is passed to this routine, it will be ignored.
*/
void gdispDeletePixmap(GDisplay *g);
void gdispPixmapDelete(GDisplay *g);
/**
* @brief Get a pointer to the pixels of the display surface.
@ -62,7 +62,7 @@ extern "C" {
* (although different pixmaps will have different pixel pointers). Once a pixmap is deleted, the pixel pointer
* should not be used by the application.
*/
pixel_t *gdispGetPixmapBits(GDisplay *g);
pixel_t *gdispPixmapGetBits(GDisplay *g);
#if GDISP_NEED_PIXMAP_IMAGE || defined(__DOXYGEN__)
/**
@ -78,7 +78,7 @@ extern "C" {
* @note If you are just wanting to copy to a real display it is more efficient to use @p gdispGetPixmapBits() and @p gdispGBlitArea().
* @note Like @p gdispGetPixmapBits(), the pointer returned is valid for the life of the pixmap.
*/
void *gdispGetPixmapMemoryImage(GDisplay *g);
void *gdispPixmapGetMemoryImage(GDisplay *g);
#endif
#ifdef __cplusplus