Difference between revisions of "ImageBox"
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Revision as of 01:40, 30 June 2014
The image box simply takes the GDISP image decoder features and wraps them around a GWIN widget. Therefore, please refer to the GDISP image and the GFILE documentation to learn how to use it.
Animated Images
If you want to use animated images such as multi-frame GIF images, you have to enable the GWIN_NEED_IMAGE_ANIMATION in your gfxconf.h.
Example
The following example reads two images from a memory location (a BMP and an animated GIF) and displays them. The demo shows how GWIN automatically takes care about the animation.
#include "gfx.h" #include "image_chibios.h" #include "image_waterfall.h" static GHandle ghImage1, ghImage2; static void createWidgets(void) { GWidgetInit wi; // Apply some default values for GWIN wi.g.show = TRUE; // create the first image widget wi.g.x = 10; wi.g.y = 10; wi.g.width = 120; wi.g.height = 120; ghImage1 = gwinImageCreate(NULL, &wi.g); gwinImageOpenMemory(ghImage1, image_chibios); // create the second image widget wi.g.x = 160; wi.g.y = 10; wi.g.width = 120; wi.g.height = 120; ghImage2 = gwinImageCreate(NULL, &wi.g); gwinImageOpenMemory(ghImage2, image_waterfall); // optionally cache the images gwinImageCache(ghImage1); gwinImageCache(ghImage2); } int main(void) { // Initialize µGFX and the underlying system gfxInit(); // Set the widget defaults gwinSetDefaultFont(gdispOpenFont("UI2")); gwinSetDefaultStyle(&WhiteWidgetStyle, FALSE); gdispClear(White); // create the widget createWidgets(); while(1) { gfxSleepMilliseconds(100); } return 0; } </syntaxhilight>
