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Diffstat (limited to 'demos/modules/gdisp/pixmaps/main.c')
| -rw-r--r-- | demos/modules/gdisp/pixmaps/main.c | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/demos/modules/gdisp/pixmaps/main.c b/demos/modules/gdisp/pixmaps/main.c new file mode 100644 index 00000000..3adcf03f --- /dev/null +++ b/demos/modules/gdisp/pixmaps/main.c @@ -0,0 +1,83 @@ +/* + * Copyright (c) 2012, 2013, Joel Bodenmann aka Tectu <joel@unormal.org> + * Copyright (c) 2012, 2013, Andrew Hannam aka inmarket + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of the <organization> nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "gfx.h" + +#define PIXMAP_WIDTH 40 +#define PIXMAP_HEIGHT 10 + +static GDisplay *pix; +static pixel_t *surface; + +int main(void) { + coord_t width, height; + coord_t i, j; + + // Initialize and clear the display + gfxInit(); + + // Get the screen size + width = gdispGetWidth(); + height = gdispGetHeight(); + + // Create a pixmap and get a pointer to the bits + pix = gdispCreatePixmap(PIXMAP_WIDTH, PIXMAP_HEIGHT); + surface = gdispGetPixmapBits(pix); + + // A pixmap can be treated either as a virtual display or as a memory framebuffer surface. + // We demonstrate writing to it using both methods. + + // First demo drawing onto the surface directly + for(j = 0; j < PIXMAP_HEIGHT; j++) + for(i = 0; i < PIXMAP_WIDTH; i++) + 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); + + i = j = 0; + while(TRUE) { + // Clear the old position + gdispFillArea(i, j, PIXMAP_WIDTH, PIXMAP_HEIGHT, Black); + + // Change the position + i += PIXMAP_WIDTH/2; + if (i >= width - PIXMAP_WIDTH/2) { + i %= width - PIXMAP_WIDTH/2; + j = (j + PIXMAP_HEIGHT/2) % (height - PIXMAP_HEIGHT/2); + } + + // Blit the pixmap to the real display at the new position + gdispBlitArea(i, j, PIXMAP_WIDTH, PIXMAP_HEIGHT, surface); + + // Wait + gfxSleepMilliseconds(100); + } +} + |