/* * Copyright 2008 Vincent Sanders * * This file is part of NetSurf, http://www.netsurf-browser.org/ * * NetSurf is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License. * * NetSurf is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . */ #include #include #include #include #include "utils/log.h" #include "utils/utf8.h" #include "desktop/plotters.h" #include "framebuffer/fb_gui.h" #include "framebuffer/fb_plotters.h" #include "framebuffer/fb_bitmap.h" #include "framebuffer/fb_font.h" static inline uint16_t * fb_16bpp_get_xy_loc(int x, int y) { return (void *)(framebuffer->ptr + (y * framebuffer->linelen) + (x << 1)); } static inline colour fb_16bpp_to_colour(uint16_t pixel) { return ((pixel & 0x1F) << 19) | ((pixel & 0x7E0) << 5) | ((pixel & 0xF800) >> 8); } /* convert a colour value to a 16bpp pixel value ready for screen output */ static inline uint16_t fb_colour_to_pixel(colour c) { return ((c & 0xF8) << 8) | ((c & 0xFC00 ) >> 5) | ((c & 0xF80000) >> 19); } #define SIGN(x) ((x<0) ? -1 : ((x>0) ? 1 : 0)) static bool fb_16bpp_line(int x0, int y0, int x1, int y1, int width, colour c, bool dotted, bool dashed) { int w; uint16_t ent; uint16_t *pvideo; int x, y, i; int dx, dy, sdy; int dxabs, dyabs; /*LOG(("%d, %d, %d, %d, %d, 0x%lx, %d, %d", x0,y0,x1,y1,width,c,dotted,dashed));*/ if (y1 > fb_plot_ctx.y1) return true; if (y0 < fb_plot_ctx.y0) return true; ent = fb_colour_to_pixel(c); if (y0 == y1) { /* horizontal line special cased */ if (!fb_plotters_clip_rect_ctx(&x0, &y0, &x1, &y1)) return true; /* line outside clipping */ /*LOG(("horiz: %d, %d, %d, %d, %d, 0x%lx, %d, %d", x0,y0,x1,y1,width,c,dotted,dashed));*/ pvideo = fb_16bpp_get_xy_loc(x0, y0); w = x1 - x0; while (w-- > 0) { *(pvideo + w) = ent; } return true; } else { /* standard bresenham line */ if (!fb_plotters_clip_line_ctx(&x0, &y0, &x1, &y1)) return true; /* line outside clipping */ //LOG(("%d, %d, %d, %d", x0,y0,x1,y1)); /* the horizontal distance of the line */ dx = x1 - x0; dxabs = abs (dx); /* the vertical distance of the line */ dy = y1 - y0; dyabs = abs (dy); sdy = dx ? SIGN(dy) * SIGN(dx) : SIGN(dy); if (dx >= 0) pvideo = fb_16bpp_get_xy_loc(x0, y0); else pvideo = fb_16bpp_get_xy_loc(x1, y1); x = dyabs >> 1; y = dxabs >> 1; if (dxabs >= dyabs) { /* the line is more horizontal than vertical */ for (i = 0; i <= dxabs; i++) { *pvideo = ent; pvideo++; y += dyabs; if (y > dxabs) { y -= dxabs; pvideo += sdy * (framebuffer->linelen>>1); } } } else { /* the line is more vertical than horizontal */ for (i = 0; i <= dyabs; i++) { *pvideo = ent; pvideo += sdy * (framebuffer->linelen >> 1); x += dxabs; if (x > dyabs) { x -= dyabs; pvideo++; } } } } return true; } static bool fb_16bpp_rectangle(int x0, int y0, int width, int height, int line_width, colour c, bool dotted, bool dashed) { fb_16bpp_line(x0, y0, x0 + width, y0, line_width, c, dotted, dashed); fb_16bpp_line(x0, y0 + height, x0 + width, y0 + height, line_width, c, dotted, dashed); fb_16bpp_line(x0, y0, x0, y0 + height, line_width, c, dotted, dashed); fb_16bpp_line(x0 + width, y0, x0 + width, y0 + height, line_width, c, dotted, dashed); return true; } static bool fb_16bpp_polygon(const int *p, unsigned int n, colour fill) { return fb_plotters_polygon(p, n, fill, fb_16bpp_line); } static bool fb_16bpp_fill(int x0, int y0, int x1, int y1, colour c) { int w; uint16_t *pvid16; uint16_t ent16; uint32_t *pvid32; uint32_t ent32; uint32_t llen; uint32_t width; uint32_t height; if (!fb_plotters_clip_rect_ctx(&x0, &y0, &x1, &y1)) return true; /* fill lies outside current clipping region */ ent16 = fb_colour_to_pixel(c); width = x1 - x0; height = y1 - y0; pvid16 = fb_16bpp_get_xy_loc(x0, y0); if (((x0 & 1) == 0) && ((width & 1) == 0)) { /* aligned to 32bit value and width is even */ width = width >> 1; llen = (framebuffer->linelen >> 2) - width; ent32 = ent16 | (ent16 << 16); pvid32 = (uint32_t *)pvid16; while (height-- > 0) { w = width; while (w >= 16) { *pvid32++ = ent32; *pvid32++ = ent32; *pvid32++ = ent32; *pvid32++ = ent32; *pvid32++ = ent32; *pvid32++ = ent32; *pvid32++ = ent32; *pvid32++ = ent32; *pvid32++ = ent32; *pvid32++ = ent32; *pvid32++ = ent32; *pvid32++ = ent32; *pvid32++ = ent32; *pvid32++ = ent32; *pvid32++ = ent32; *pvid32++ = ent32; w-=16; } while (w >= 4) { *pvid32++ = ent32; *pvid32++ = ent32; *pvid32++ = ent32; *pvid32++ = ent32; w-=4; } while (w > 0) { *pvid32++ = ent32; w--; } // for (w = width; w > 0; w--) *pvid32++ = ent32; pvid32 += llen; } } else { llen = (framebuffer->linelen >> 1) - width; while (height-- > 0) { for (w = width; w > 0; w--) *pvid16++ = ent16; pvid16 += llen; } } return true; } static bool fb_16bpp_clg(colour c) { /* LOG(("c %lx", c)); */ fb_16bpp_fill(fb_plot_ctx.x0, fb_plot_ctx.y0, fb_plot_ctx.x1, fb_plot_ctx.y1, c); return true; } #ifdef FB_USE_FREETYPE static bool fb_16bpp_draw_ft_monobitmap(FT_Bitmap *bp, int x, int y, colour c) { return false; } static bool fb_16bpp_draw_ft_bitmap(FT_Bitmap *bp, int x, int y, colour c) { uint16_t *pvideo; uint8_t *pixel = (uint8_t *)bp->buffer; colour abpixel; /* alphablended pixel */ int xloop, yloop; int x0,y0,x1,y1; int xoff, yoff; /* x and y offset into image */ int height = bp->rows; int width = bp->width; uint32_t fgcol; /* The part of the scaled image actually displayed is cropped to the * current context. */ x0 = x; y0 = y; x1 = x + width; y1 = y + height; if (!fb_plotters_clip_rect_ctx(&x0, &y0, &x1, &y1)) return true; if (height > (y1 - y0)) height = (y1 - y0); if (width > (x1 - x0)) width = (x1 - x0); xoff = x0 - x; yoff = y0 - y; /* plot the image */ pvideo = fb_16bpp_get_xy_loc(x0, y0); fgcol = c & 0xFFFFFF; for (yloop = 0; yloop < height; yloop++) { for (xloop = 0; xloop < width; xloop++) { abpixel = (pixel[((yoff + yloop) * bp->pitch) + xloop + xoff] << 24) | fgcol; if ((abpixel & 0xFF000000) != 0) { if ((abpixel & 0xFF000000) != 0xFF000000) { abpixel = fb_plotters_ablend(abpixel, fb_16bpp_to_colour(*(pvideo + xloop))); } *(pvideo + xloop) = fb_colour_to_pixel(abpixel); } } pvideo += (framebuffer->linelen >> 1); } return true; } static bool fb_16bpp_text(int x, int y, const struct css_style *style, const char *text, size_t length, colour bg, colour c) { uint32_t ucs4; size_t nxtchr = 0; FT_Glyph glyph; FT_BitmapGlyph bglyph; while (nxtchr < length) { ucs4 = utf8_to_ucs4(text + nxtchr, length - nxtchr); nxtchr = utf8_next(text, length, nxtchr); glyph = fb_getglyph(style, ucs4); if (glyph == NULL) continue; if (glyph->format == FT_GLYPH_FORMAT_BITMAP) { bglyph = (FT_BitmapGlyph)glyph; /* now, draw to our target surface */ if (bglyph->bitmap.pixel_mode == FT_PIXEL_MODE_MONO) { fb_16bpp_draw_ft_monobitmap(&bglyph->bitmap, x + bglyph->left, y - bglyph->top, c); } else { fb_16bpp_draw_ft_bitmap(&bglyph->bitmap, x + bglyph->left, y - bglyph->top, c); } } x += glyph->advance.x >> 16; } return true; } #else static bool fb_16bpp_text(int x, int y, const struct css_style *style, const char *text, size_t length, colour bg, colour c) { const struct fb_font_desc* fb_font = fb_get_font(style); const uint32_t *font_data; int xloop, yloop; uint32_t row; size_t chr; uint16_t *pvideo; uint16_t fgcol; uint16_t bgcol; unsigned char *buffer = NULL; int x0,y0,x1,y1; int xoff, yoff; /* x and y offset into image */ int height = fb_font->height; /* aquire thge text in local font encoding */ utf8_to_font_encoding(fb_font, text, length, (char **)&buffer); if (!buffer) return true; length = strlen((char *)buffer); /* y is given to the fonts baseline we need it to the fonts top */ y-=((fb_font->height * 75)/100); y+=1; /* the coord is the bottom-left of the pixels offset by 1 to make * it work since fb coords are the top-left of pixels */ /* The part of the text displayed is cropped to the current context. */ x0 = x; y0 = y; x1 = x + (fb_font->width * length); y1 = y + fb_font->height; if (!fb_plotters_clip_rect_ctx(&x0, &y0, &x1, &y1)) return true; /* text lies outside current clipping region */ /* find width and height to plot */ if (height > (y1 - y0)) height = (y1 - y0); xoff = x0 - x; yoff = y0 - y; fgcol = fb_colour_to_pixel(c); bgcol = fb_colour_to_pixel(bg); /*LOG(("x %d, y %d, style %p, txt %.*s , len %d, bg 0x%lx, fg 0x%lx", x,y,style,length,text,length,bg,c));*/ for (chr = 0; chr < length; chr++, x += fb_font->width) { if ((x + fb_font->width) > x1) break; if (x < x0) continue; pvideo = fb_16bpp_get_xy_loc(x, y0); /* move our font-data to the correct position */ font_data = fb_font->data + (buffer[chr] * fb_font->height); for (yloop = 0; yloop < height; yloop++) { row = font_data[yoff + yloop]; for (xloop = fb_font->width; xloop > 0 ; xloop--) { if ((row & 1) != 0) *(pvideo + xloop) = fgcol; row = row >> 1; } pvideo += (framebuffer->linelen >> 1); } } free(buffer); return true; } #endif static bool fb_16bpp_disc(int x, int y, int radius, colour c, bool filled) { LOG(("x %d, y %d, r %d, c 0x%lx, fill %d", x, y, radius, (unsigned long)c, filled)); return true; } static bool fb_16bpp_arc(int x, int y, int radius, int angle1, int angle2, colour c) { LOG(("x %d, y %d, r %d, a1 %d, a2 %d, c 0x%lx", x, y, radius, angle1, angle2, (unsigned long)c)); return true; } static bool fb_16bpp_bitmap(int x, int y, int width, int height, struct bitmap *bitmap, colour bg, struct content *content) { uint16_t *pvideo; colour *pixel = (colour *)bitmap->pixdata; colour abpixel; /* alphablended pixel */ int xloop, yloop; int x0,y0,x1,y1; int xoff, yoff; /* x and y offset into image */ /* TODO here we should scale the image from bitmap->width to width, for * now simply crop. */ if (width > bitmap->width) width = bitmap->width; if (height > bitmap->height) height = bitmap->height; /* The part of the scaled image actually displayed is cropped to the * current context. */ x0 = x; y0 = y; x1 = x + width; y1 = y + height; if (!fb_plotters_clip_rect_ctx(&x0, &y0, &x1, &y1)) return true; LOG(("%d, %d %d, %d bitmap %p, content %p", x0,y0,x1,y1,bitmap,content)); if (height > (y1 - y0)) height = (y1 - y0); if (width > (x1 - x0)) width = (x1 - x0); xoff = x0 - x; yoff = (y0 - y) * bitmap->width; height = height * bitmap->width + yoff; /* plot the image */ pvideo = fb_16bpp_get_xy_loc(x0, y0); if (bitmap->opaque) { for (yloop = yoff; yloop < height; yloop += bitmap->width) { for (xloop = 0; xloop < width; xloop++) { abpixel = pixel[yloop + xloop + xoff]; *(pvideo + xloop) = fb_colour_to_pixel(abpixel); } pvideo += (framebuffer->linelen >> 1); } } else { for (yloop = yoff; yloop < height; yloop += bitmap->width) { for (xloop = 0; xloop < width; xloop++) { abpixel = pixel[yloop + xloop + xoff]; if ((abpixel & 0xFF000000) != 0) { if ((abpixel & 0xFF000000) != 0xFF000000) { abpixel = fb_plotters_ablend(abpixel, fb_16bpp_to_colour(*(pvideo + xloop))); } *(pvideo + xloop) = fb_colour_to_pixel(abpixel); } } pvideo += (framebuffer->linelen >> 1); } } return true; } static bool fb_16bpp_bitmap_tile(int x, int y, int width, int height, struct bitmap *bitmap, colour bg, bool repeat_x, bool repeat_y, struct content *content) { return fb_plotters_bitmap_tile(x, y, width, height, bitmap, bg, repeat_x, repeat_y, content, fb_16bpp_bitmap); } static bool fb_16bpp_flush(void) { LOG(("optional")); return true; } static bool fb_16bpp_path(const float *p, unsigned int n, colour fill, float width, colour c, const float transform[6]) { LOG(("%f, %d, 0x%lx, %f, 0x%lx, %f", *p, n, (unsigned long)fill, width, (unsigned long)c, *transform)); return true; } const struct plotter_table framebuffer_16bpp_plot = { .clg = fb_16bpp_clg, .rectangle = fb_16bpp_rectangle, .line = fb_16bpp_line, .polygon = fb_16bpp_polygon, .fill = fb_16bpp_fill, .clip = fb_clip, .text = fb_16bpp_text, .disc = fb_16bpp_disc, .arc = fb_16bpp_arc, .bitmap = fb_16bpp_bitmap, .bitmap_tile = fb_16bpp_bitmap_tile, .flush = fb_16bpp_flush, .path = fb_16bpp_path, .option_knockout = true, }; /* * Local Variables: * c-basic-offset:8 * End: */