/* * Copyright 2008 Vincent Sanders * * Framebuffer interface * * 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 #include #include #include #include "utils/log.h" #include "desktop/browser.h" #include "image/bitmap.h" #include "framebuffer/gui.h" #include "framebuffer/fbtk.h" #include "framebuffer/framebuffer.h" #include "framebuffer/font.h" /* netsurf framebuffer library handle */ static nsfb_t *nsfb; static bool framebuffer_plot_disc(int x, int y, int radius, const plot_style_t *style) { nsfb_bbox_t ellipse; ellipse.x0 = x - radius; ellipse.y0 = y - radius; ellipse.x1 = x + radius; ellipse.y1 = y + radius; if (style->fill_type != PLOT_OP_TYPE_NONE) { nsfb_plot_ellipse_fill(nsfb, &ellipse, style->fill_colour); } if (style->stroke_type != PLOT_OP_TYPE_NONE) { nsfb_plot_ellipse(nsfb, &ellipse, style->stroke_colour); } return true; } static bool framebuffer_plot_arc(int x, int y, int radius, int angle1, int angle2, const plot_style_t *style) { return nsfb_plot_arc(nsfb, x, y, radius, angle1, angle2, style->fill_colour); } static bool framebuffer_plot_polygon(const int *p, unsigned int n, const plot_style_t *style) { return nsfb_plot_polygon(nsfb, p, n, style->fill_colour); } #ifdef FB_USE_FREETYPE static bool framebuffer_plot_text(int x, int y, const char *text, size_t length, const plot_font_style_t *fstyle) { uint32_t ucs4; size_t nxtchr = 0; FT_Glyph glyph; FT_BitmapGlyph bglyph; nsfb_bbox_t loc; while (nxtchr < length) { ucs4 = utf8_to_ucs4(text + nxtchr, length - nxtchr); nxtchr = utf8_next(text, length, nxtchr); glyph = fb_getglyph(fstyle, ucs4); if (glyph == NULL) continue; if (glyph->format == FT_GLYPH_FORMAT_BITMAP) { bglyph = (FT_BitmapGlyph)glyph; loc.x0 = x + bglyph->left; loc.y0 = y - bglyph->top; loc.x1 = loc.x0 + bglyph->bitmap.width; loc.y1 = loc.y0 + bglyph->bitmap.rows; /* now, draw to our target surface */ if (bglyph->bitmap.pixel_mode == FT_PIXEL_MODE_MONO) { nsfb_plot_glyph1(nsfb, &loc, bglyph->bitmap.buffer, bglyph->bitmap.pitch, fstyle->foreground); } else { nsfb_plot_glyph8(nsfb, &loc, bglyph->bitmap.buffer, bglyph->bitmap.pitch, fstyle->foreground); } } x += glyph->advance.x >> 16; } return true; } #else static bool framebuffer_plot_text(int x, int y, const char *text, size_t length, const plot_font_style_t *fstyle) { const struct fb_font_desc* fb_font = fb_get_font(fstyle); const uint32_t *chrp; char *buffer = NULL; int chr; int blen; nsfb_bbox_t loc; utf8_to_font_encoding(fb_font, text, length, &buffer); if (buffer == NULL) return true; /* y is given as the baseline, at 3/4 from top. * we need it to the top */ y -= ((fb_font->height * 3) / 4); /* 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 */ y += 1; blen = strlen(buffer); for (chr = 0; chr < blen; chr++) { loc.x0 = x; loc.y0 = y; loc.x1 = loc.x0 + fb_font->width; loc.y1 = loc.y0 + fb_font->height; chrp = fb_font->data + ((unsigned char)buffer[chr] * fb_font->height); nsfb_plot_glyph1(nsfb, &loc, (uint8_t *)chrp, 32, fstyle->foreground); x += fb_font->width; } free(buffer); return true; } #endif static bool framebuffer_plot_bitmap(int x, int y, int width, int height, struct bitmap *bitmap, colour bg, bitmap_flags_t flags) { nsfb_bbox_t loc; nsfb_bbox_t clipbox; bool repeat_x = (flags & BITMAPF_REPEAT_X); bool repeat_y = (flags & BITMAPF_REPEAT_Y); int bmwidth; int bmheight; int bmstride; enum nsfb_format_e bmformat; unsigned char *bmptr; nsfb_t *bm = (nsfb_t *)bitmap; /* x and y define coordinate of top left of of the initial explicitly * placed tile. The width and height are the image scaling and the * bounding box defines the extent of the repeat (which may go in all * four directions from the initial tile). */ if (!(repeat_x || repeat_y)) { /* Not repeating at all, so just plot it */ loc.x0 = x; loc.y0 = y; loc.x1 = loc.x0 + width; loc.y1 = loc.y0 + height; return nsfb_plot_copy(bm, NULL, nsfb, &loc); } nsfb_plot_get_clip(nsfb, &clipbox); nsfb_get_geometry(bm, &bmwidth, &bmheight, &bmformat); nsfb_get_buffer(bm, &bmptr, &bmstride); /* Optimise tiled plots of 1x1 bitmaps by replacing with a flat fill * of the area. Can only be done when image is fully opaque. */ if ((bmwidth == 1) && (bmheight == 1)) { if ((*(nsfb_colour_t *)bmptr & 0xff000000) != 0) { return nsfb_plot_rectangle_fill(nsfb, &clipbox, *(nsfb_colour_t *)bmptr); } } /* Optimise tiled plots of bitmaps scaled to 1x1 by replacing with * a flat fill of the area. Can only be done when image is fully * opaque. */ if ((width == 1) && (height == 1)) { if (bitmap_get_opaque(bm)) { /** TODO: Currently using top left pixel. Maybe centre * pixel or average value would be better. */ return nsfb_plot_rectangle_fill(nsfb, &clipbox, *(nsfb_colour_t *)bmptr); } } /* get left most tile position */ if (repeat_x) for (; x > clipbox.x0; x -= width); /* get top most tile position */ if (repeat_y) for (; y > clipbox.y0; y -= height); /* set up top left tile location */ loc.x0 = x; loc.y0 = y; loc.x1 = loc.x0 + width; loc.y1 = loc.y0 + height; /* plot tiling across and down to extents */ nsfb_plot_bitmap_tiles(nsfb, &loc, repeat_x ? ((clipbox.x1 - x) + width - 1) / width : 1, repeat_y ? ((clipbox.y1 - y) + height - 1) / height : 1, (nsfb_colour_t *)bmptr, bmwidth, bmheight, bmstride * 8 / 32, bmformat == NSFB_FMT_ABGR8888); return true; } static bool framebuffer_plot_rectangle(int x0, int y0, int x1, int y1, const plot_style_t *style) { nsfb_bbox_t rect; bool dotted = false; bool dashed = false; rect.x0 = x0; rect.y0 = y0; rect.x1 = x1; rect.y1 = y1; if (style->fill_type != PLOT_OP_TYPE_NONE) { nsfb_plot_rectangle_fill(nsfb, &rect, style->fill_colour); } if (style->stroke_type != PLOT_OP_TYPE_NONE) { if (style->stroke_type == PLOT_OP_TYPE_DOT) dotted = true; if (style->stroke_type == PLOT_OP_TYPE_DASH) dashed = true; nsfb_plot_rectangle(nsfb, &rect, style->stroke_width, style->stroke_colour, dotted, dashed); } return true; } static bool framebuffer_plot_line(int x0, int y0, int x1, int y1, const plot_style_t *style) { nsfb_bbox_t rect; nsfb_plot_pen_t pen; rect.x0 = x0; rect.y0 = y0; rect.x1 = x1; rect.y1 = y1; if (style->stroke_type != PLOT_OP_TYPE_NONE) { if (style->stroke_type == PLOT_OP_TYPE_DOT) { pen.stroke_type = NFSB_PLOT_OPTYPE_PATTERN; pen.stroke_pattern = 0xAAAAAAAA; } else if (style->stroke_type == PLOT_OP_TYPE_DASH) { pen.stroke_type = NFSB_PLOT_OPTYPE_PATTERN; pen.stroke_pattern = 0xF0F0F0F0; } else { pen.stroke_type = NFSB_PLOT_OPTYPE_SOLID; } pen.stroke_colour = style->stroke_colour; pen.stroke_width = style->stroke_width; nsfb_plot_line(nsfb, &rect, &pen); } return true; } static bool framebuffer_plot_path(const float *p, unsigned int n, colour fill, float width, colour c, const float transform[6]) { LOG(("path unimplemented")); return true; } static bool framebuffer_plot_clip(const struct rect *clip) { nsfb_bbox_t nsfb_clip; nsfb_clip.x0 = clip->x0; nsfb_clip.y0 = clip->y0; nsfb_clip.x1 = clip->x1; nsfb_clip.y1 = clip->y1; return nsfb_plot_set_clip(nsfb, &nsfb_clip); } const struct plotter_table fb_plotters = { .clip = framebuffer_plot_clip, .arc = framebuffer_plot_arc, .disc = framebuffer_plot_disc, .line = framebuffer_plot_line, .rectangle = framebuffer_plot_rectangle, .polygon = framebuffer_plot_polygon, .path = framebuffer_plot_path, .bitmap = framebuffer_plot_bitmap, .text = framebuffer_plot_text, .option_knockout = true, }; nsfb_t * framebuffer_initialise(const char *fename, int width, int height, int bpp) { enum nsfb_type_e fbtype; enum nsfb_format_e fbfmt; /* bpp is a proxy for the framebuffer format */ switch (bpp) { case 32: fbfmt = NSFB_FMT_XRGB8888; break; case 24: fbfmt = NSFB_FMT_RGB888; break; case 16: fbfmt = NSFB_FMT_RGB565; break; case 8: fbfmt = NSFB_FMT_I8; break; case 4: fbfmt = NSFB_FMT_I4; break; case 1: fbfmt = NSFB_FMT_I1; break; default: LOG(("Bad bits per pixel (%d)\n", bpp)); return NULL; } fbtype = nsfb_type_from_name(fename); if (fbtype == NSFB_SURFACE_NONE) { LOG(("The %s surface is not available from libnsfb\n", fename)); return NULL; } nsfb = nsfb_new(fbtype); if (nsfb == NULL) { LOG(("Unable to create %s fb surface\n", fename)); return NULL; } if (nsfb_set_geometry(nsfb, width, height, fbfmt) == -1) { LOG(("Unable to set surface geometry\n")); nsfb_free(nsfb); return NULL; } nsfb_cursor_init(nsfb); if (nsfb_init(nsfb) == -1) { LOG(("Unable to initialise nsfb surface\n")); nsfb_free(nsfb); return NULL; } return nsfb; } void framebuffer_finalise(void) { nsfb_free(nsfb); } bool framebuffer_set_cursor(struct fbtk_bitmap *bm) { return nsfb_cursor_set(nsfb, (nsfb_colour_t *)bm->pixdata, bm->width, bm->height, bm->width, bm->hot_x, bm->hot_y); } nsfb_t *framebuffer_set_surface(nsfb_t *new_nsfb) { nsfb_t *old_nsfb; old_nsfb = nsfb; nsfb = new_nsfb; return old_nsfb; }