+++ /dev/null
-/**
- * \file
- * <!--
- * Copyright 2003, 2004, 2005, 2006 Develer S.r.l. (http://www.develer.com/)
- * Copyright 1999 Bernardo Innocenti <bernie@develer.com>
- * This file is part of DevLib - See README.devlib for information.
- * -->
- *
- * \author Bernardo Innocenti <bernie@develer.com>
- * \author Stefano Fedrigo <aleph@develer.com>
- *
- * \brief Bitmap manipulation routines.
- */
-
-#include "gfx.h"
-#include "gfx_p.h"
-
-#include <cfg/debug.h> /* ASSERT() */
-#include <cfg/cpu.h> /* CPU_HARVARD */
-#include <cfg/macros.h> /* MIN() */
-#include <appconfig.h> /* CONFIG_GFX_CLIPPING */
-
-#include <string.h> /* memset() */
-
-#if CONFIG_GFX_TEXT
-#include <gfx/font.h> /* default_font */
-#endif
-
-
-/**
- * Initialize a Bitmap structure with the provided parameters.
- *
- * \note The pen position is reset to the origin.
- */
-void gfx_bitmapInit(Bitmap *bm, uint8_t *raster, coord_t w, coord_t h)
-{
- bm->raster = raster;
- bm->width = w;
- bm->height = h;
- #if (CONFIG_BITMAP_FMT == BITMAP_FMT_PLANAR_H_MSB)
- bm->stride = (w + 7) / 8;
- #elif CONFIG_BITMAP_FMT == BITMAP_FMT_PLANAR_V_LSB
- bm->stride = w;
- #else
- #error Unknown value of CONFIG_BITMAP_FMT
- #endif /* CONFIG_BITMAP_FMT */
- bm->penX = 0;
- bm->penY = 0;
-
-#if CONFIG_GFX_TEXT
- gfx_setFont(bm, &default_font);
- bm->styles = 0;
-#endif
-
-#if CONFIG_GFX_CLIPPING
- bm->cr.xmin = 0;
- bm->cr.ymin = 0;
- bm->cr.xmax = w;
- bm->cr.ymax = h;
-#endif /* CONFIG_GFX_CLIPPING */
-}
-
-
-/**
- * Clear the whole bitmap surface to the background color.
- *
- * \note This function does \b not update the current pen position.
- * \note This function bypasses the current clipping area.
- */
-void gfx_bitmapClear(Bitmap *bm)
-{
- memset(bm->raster, 0, RAST_SIZE(bm->width, bm->height));
-}
-
-
-#if CPU_HARVARD
-
-#include <avr/pgmspace.h> /* FIXME: memcpy_P() */
-
-/**
- * Copy a raster picture located in program memory in the bitmap.
- * The size of the raster to copy *must* be the same of the raster bitmap.
- *
- * \note This function does \b not update the current pen position
- */
-void gfx_blit_P(Bitmap *bm, const pgm_uint8_t *raster)
-{
- memcpy_P(bm->raster, raster, RAST_SIZE(bm->width, bm->height));
-}
-#endif /* CPU_HARVARD */
-
-#if CONFIG_GFX_CLIPPING
- /**
- * Clip destination coordinates inside a clipping range.
- *
- * This macro helps a drawing operation to adjust its
- * destination X and Y coordinates inside the destination
- * clipping range.
- *
- * The source start coordinate is adjusted as well
- * when destination start clipping occurs.
- */
- #define gfx_clip(dmin, dmax, smin, cmin, cmax) \
- do { \
- if ((dmin) < (cmin)) \
- { \
- (smin) += (cmin) - (dmin); \
- (dmin) = (cmin); \
- } \
- (dmax) = MIN((dmax), (cmax)); \
- } while(0)
-
-#else /* !CONFIG_GFX_CLIPPING */
-
- #define gfx_clip(dmin, dmax, smin, cmin, cmax) do { } while (0)
-
-#endif /* !CONFIG_GFX_CLIPPING */
-
-
-/**
- * Copy a rectangular area of a bitmap on another bitmap.
- *
- * Blitting is a common copy operation involving two bitmaps.
- * A rectangular area of the source bitmap is copied bit-wise
- * to a different position in the destination bitmap.
- *
- * \note Using the same bitmap for \a src and \a dst is unsupported.
- *
- * \param dst Bitmap where the operation writes.
- * \param rect The (xmin;ymin) coordinates provide the top/left offset
- * for drawing in the destination bitmap. If the source
- * bitmap is larger than the rectangle, drawing is clipped.
- * \param src Bitmap containing the source pixels.
- * \param srcx Starting X offset in the source bitmap.
- * \param srcy Starting Y offset in the source bitmap.
- */
-void gfx_blit(Bitmap *dst, const Rect *rect, const Bitmap *src, coord_t srcx, coord_t srcy)
-{
- coord_t dxmin, dymin, dxmax, dymax;
- coord_t dx, dy, sx, sy;
-
- /*
- * Pre-clip coordinates inside src->width/height.
- */
- dxmin = rect->xmin;
- dymin = rect->ymin;
- dxmax = MIN(rect->xmax, rect->xmin + src->width);
- dymax = MIN(rect->ymax, rect->ymin + src->height);
-
- /* Perform regular clipping */
- gfx_clip(dxmin, dxmax, srcx, dst->cr.xmin, dst->cr.xmax);
- gfx_clip(dymin, dymax, srcy, dst->cr.ymin, dst->cr.ymax);
-
- //kprintf("dxmin=%d, sxmin=%d, dxmax=%d; ", dxmin, sxmin, dxmax);
- //kprintf("dymin=%d, symin=%d, dymax=%d\n", dymin, symin, dymax);
-
- /* TODO: make it not as dog slow as this */
- for (dx = dxmin, sx = srcx; dx < dxmax; ++dx, ++sx)
- for (dy = dymin, sy = srcy; dy < dymax; ++dy, ++sy)
- BM_DRAWPIXEL(dst, dx, dy, BM_READPIXEL(src, sx, sy));
-}
-
-/**
- * Blit a raster to a Bitmap.
- *
- * \todo Merge this function into gfx_blit()
- *
- * \see gfx_blit()
- */
-void gfx_blitRaster(Bitmap *dst, coord_t dxmin, coord_t dymin,
- const uint8_t *raster, coord_t w, coord_t h, coord_t stride)
-{
- coord_t dxmax = dxmin + w, dymax = dymin + h;
- coord_t sxmin = 0, symin = 0;
- coord_t dx, dy, sx, sy;
-
- /* Perform regular clipping */
- gfx_clip(dxmin, dxmax, sxmin, dst->cr.xmin, dst->cr.xmax);
- gfx_clip(dymin, dymax, symin, dst->cr.ymin, dst->cr.ymax);
-
- //kprintf("dxmin=%d, sxmin=%d, dxmax=%d; ", dxmin, sxmin, dxmax);
- //kprintf("dymin=%d, symin=%d, dymax=%d\n", dymin, symin, dymax);
-
- /* TODO: make it not as dog slow as this */
- for (dx = dxmin, sx = sxmin; dx < dxmax; ++dx, ++sx)
- for (dy = dymin, sy = symin; dy < dymax; ++dy, ++sy)
- BM_DRAWPIXEL(dst, dx, dy, RAST_READPIXEL(raster, sx, sy, stride));
-}
-
-/**
- * Blit an Image to a Bitmap.
- *
- * \see gfx_blit()
- */
-void gfx_blitImage(Bitmap *dst, coord_t dxmin, coord_t dymin, const Image *image)
-{
- ASSERT(image);
-
- gfx_blitRaster(dst, dxmin, dymin,
- image->raster, image->width, image->height, image->stride);
-}
-
-
-#if CONFIG_GFX_CLIPPING || CONFIG_GFX_VCOORDS
-
-/**
- * Set the bitmap clipping rectangle to the specified coordinates.
- *
- * All drawing performed on the bitmap will be clipped inside this
- * rectangle.
- *
- * The clipping rectangle is also used as a bounding box for the
- * logical view of the virtual coordinate system.
- *
- * \note Following the convention used for all other operations, the
- * top-left pixels of the rectangle are included, while the
- * bottom-right pixels are considered outside the clipping region.
- *
- * \see gfx_setViewRect
- */
-void gfx_setClipRect(Bitmap *bm, coord_t minx, coord_t miny, coord_t maxx, coord_t maxy)
-{
- ASSERT(minx < maxx);
- ASSERT(miny < maxy);
- ASSERT(miny >= 0);
- ASSERT(minx >= 0);
- ASSERT(maxx <= bm->width);
- ASSERT(maxy <= bm->height);
-
- bm->cr.xmin = minx;
- bm->cr.ymin = miny;
- bm->cr.xmax = maxx;
- bm->cr.ymax = maxy;
-
-// kprintf("cr.xmin = %d, cr.ymin = %d, cr.xmax = %d, cr.ymax = %d\n",
-// bm->cr.xMin, bm->cr.ymin, bm->cr.xmax, bm->cr.ymax);
-}
-
-#endif /* CONFIG_GFX_CLIPPING */
-
projects / bertos.git / blobdiff