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author | Vincent Sanders <vince@kyllikki.org> | 2016-05-05 22:28:51 +0100 |
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committer | Vincent Sanders <vince@kyllikki.org> | 2016-05-15 13:44:34 +0100 |
commit | d21447d096a320a08b3efb2b8768fad0dcdcfd64 (patch) | |
tree | 1a83814b7c9e94b2f13c473261f23dd3a17dee64 /gtk/plotters.c | |
parent | 2cbb337756d9af5bda4d594964d446439f602551 (diff) | |
download | netsurf-d21447d096a320a08b3efb2b8768fad0dcdcfd64.tar.gz netsurf-d21447d096a320a08b3efb2b8768fad0dcdcfd64.tar.bz2 |
move frontends into sub directory
Diffstat (limited to 'gtk/plotters.c')
-rw-r--r-- | gtk/plotters.c | 538 |
1 files changed, 0 insertions, 538 deletions
diff --git a/gtk/plotters.c b/gtk/plotters.c deleted file mode 100644 index 1d8c19827..000000000 --- a/gtk/plotters.c +++ /dev/null @@ -1,538 +0,0 @@ -/* - * Copyright 2006 Rob Kendrick <rjek@rjek.com> - * Copyright 2005 James Bursa <bursa@users.sourceforge.net> - * - * 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 <http://www.gnu.org/licenses/>. - */ - -/** - * \file - * GTK and Cairo plotter implementations. - * - * Uses Cairo drawing primitives to render browser output. - * \todo remove the use of the gdk structure for clipping - */ - -#include <math.h> -#include <assert.h> -#include <gdk/gdk.h> -#include <gtk/gtk.h> - -#include "utils/log.h" -#include "utils/utils.h" -#include "desktop/plotters.h" -#include "utils/nsoption.h" - -#include "gtk/layout_pango.h" -#include "gtk/plotters.h" -#include "gtk/scaffolding.h" -#include "gtk/bitmap.h" - -GtkWidget *current_widget; -cairo_t *current_cr; - -static GdkRectangle cliprect; - -struct plotter_table plot; - -/** Set cairo context colour to nsgtk colour. */ -void nsgtk_set_colour(colour c) -{ - cairo_set_source_rgba(current_cr, - (c & 0xff) / 255.0, - ((c & 0xff00) >> 8) / 255.0, - ((c & 0xff0000) >> 16) / 255.0, - 1.0); -} - -/** Set cairo context to solid plot operation. */ -static inline void nsgtk_set_solid(void) -{ - double dashes = 0; - cairo_set_dash(current_cr, &dashes, 0, 0); -} - -/** Set cairo context to dotted plot operation. */ -static inline void nsgtk_set_dotted(void) -{ - double cdashes[] = { 1.0, 2.0 }; - cairo_set_dash(current_cr, cdashes, 2, 0); -} - -/** Set cairo context to dashed plot operation. */ -static inline void nsgtk_set_dashed(void) -{ - double cdashes[] = { 8.0, 2.0 }; - cairo_set_dash(current_cr, cdashes, 2, 0); -} - -/** Set clipping area for subsequent plot operations. */ -static bool nsgtk_plot_clip(const struct rect *clip) -{ - cairo_reset_clip(current_cr); - cairo_rectangle(current_cr, clip->x0, clip->y0, - clip->x1 - clip->x0, clip->y1 - clip->y0); - cairo_clip(current_cr); - - cliprect.x = clip->x0; - cliprect.y = clip->y0; - cliprect.width = clip->x1 - clip->x0; - cliprect.height = clip->y1 - clip->y0; - - return true; -} - - -static bool nsgtk_plot_arc(int x, int y, int radius, int angle1, int angle2, const plot_style_t *style) -{ - nsgtk_set_colour(style->fill_colour); - nsgtk_set_solid(); - - cairo_set_line_width(current_cr, 1); - cairo_arc(current_cr, x, y, radius, - (angle1 + 90) * (M_PI / 180), - (angle2 + 90) * (M_PI / 180)); - cairo_stroke(current_cr); - - return true; -} - -static bool nsgtk_plot_disc(int x, int y, int radius, const plot_style_t *style) -{ - if (style->fill_type != PLOT_OP_TYPE_NONE) { - nsgtk_set_colour(style->fill_colour); - nsgtk_set_solid(); - cairo_set_line_width(current_cr, 0); - cairo_arc(current_cr, x, y, radius, 0, M_PI * 2); - cairo_fill(current_cr); - cairo_stroke(current_cr); - } - - if (style->stroke_type != PLOT_OP_TYPE_NONE) { - nsgtk_set_colour(style->stroke_colour); - - switch (style->stroke_type) { - case PLOT_OP_TYPE_SOLID: /**< Solid colour */ - default: - nsgtk_set_solid(); - break; - - case PLOT_OP_TYPE_DOT: /**< Doted plot */ - nsgtk_set_dotted(); - break; - - case PLOT_OP_TYPE_DASH: /**< dashed plot */ - nsgtk_set_dashed(); - break; - } - - if (style->stroke_width == 0) - cairo_set_line_width(current_cr, 1); - else - cairo_set_line_width(current_cr, style->stroke_width); - - cairo_arc(current_cr, x, y, radius, 0, M_PI * 2); - - cairo_stroke(current_cr); - } - - return true; -} - -static bool -nsgtk_plot_line(int x0, int y0, int x1, int y1, const plot_style_t *style) -{ - nsgtk_set_colour(style->stroke_colour); - - switch (style->stroke_type) { - case PLOT_OP_TYPE_SOLID: /**< Solid colour */ - default: - nsgtk_set_solid(); - break; - - case PLOT_OP_TYPE_DOT: /**< Doted plot */ - nsgtk_set_dotted(); - break; - - case PLOT_OP_TYPE_DASH: /**< dashed plot */ - nsgtk_set_dashed(); - break; - } - - if (style->stroke_type != PLOT_OP_TYPE_NONE) { - nsgtk_set_colour(style->stroke_colour); - } - - if (style->stroke_width == 0) - cairo_set_line_width(current_cr, 1); - else - cairo_set_line_width(current_cr, style->stroke_width); - - /* core expects horizontal and vertical lines to be on pixels, not - * between pixels */ - cairo_move_to(current_cr, (x0 == x1) ? x0 + 0.5 : x0, - (y0 == y1) ? y0 + 0.5 : y0); - cairo_line_to(current_cr, (x0 == x1) ? x1 + 0.5 : x1, - (y0 == y1) ? y1 + 0.5 : y1); - cairo_stroke(current_cr); - - return true; -} - -/** Plot a caret. - * - * @note It is assumed that the plotters have been set up. - */ -void nsgtk_plot_caret(int x, int y, int h) -{ - nsgtk_set_solid(); /* solid line */ - nsgtk_set_colour(0); /* black */ - cairo_set_line_width(current_cr, 1); /* thin line */ - - /* core expects horizontal and vertical lines to be on pixels, not - * between pixels */ - cairo_move_to(current_cr, x + 0.5, y); - cairo_line_to(current_cr, x + 0.5, y + h - 1); - cairo_stroke(current_cr); -} - -static bool nsgtk_plot_rectangle(int x0, int y0, int x1, int y1, const plot_style_t *style) -{ - if (style->fill_type != PLOT_OP_TYPE_NONE) { - nsgtk_set_colour(style->fill_colour); - nsgtk_set_solid(); - - cairo_set_line_width(current_cr, 0); - cairo_rectangle(current_cr, x0, y0, x1 - x0, y1 - y0); - cairo_fill(current_cr); - cairo_stroke(current_cr); - } - - if (style->stroke_type != PLOT_OP_TYPE_NONE) { - nsgtk_set_colour(style->stroke_colour); - - switch (style->stroke_type) { - case PLOT_OP_TYPE_SOLID: /**< Solid colour */ - default: - nsgtk_set_solid(); - break; - - case PLOT_OP_TYPE_DOT: /**< Doted plot */ - nsgtk_set_dotted(); - break; - - case PLOT_OP_TYPE_DASH: /**< dashed plot */ - nsgtk_set_dashed(); - break; - } - - if (style->stroke_width == 0) - cairo_set_line_width(current_cr, 1); - else - cairo_set_line_width(current_cr, style->stroke_width); - - cairo_rectangle(current_cr, x0 + 0.5, y0 + 0.5, x1 - x0, y1 - y0); - cairo_stroke(current_cr); - } - return true; -} - -static bool nsgtk_plot_polygon(const int *p, unsigned int n, const plot_style_t *style) -{ - unsigned int i; - - nsgtk_set_colour(style->fill_colour); - nsgtk_set_solid(); - - cairo_set_line_width(current_cr, 0); - cairo_move_to(current_cr, p[0], p[1]); - for (i = 1; i != n; i++) { - cairo_line_to(current_cr, p[i * 2], p[i * 2 + 1]); - } - cairo_fill(current_cr); - cairo_stroke(current_cr); - - return true; -} - - - - -static bool nsgtk_plot_text(int x, int y, const char *text, size_t length, - const struct plot_font_style *fstyle) -{ - return nsfont_paint(x, y, text, length, fstyle); -} - - - -static bool nsgtk_plot_pixbuf(int x, int y, int width, int height, - struct bitmap *bitmap, colour bg) -{ - int x0, y0, x1, y1; - int dsrcx, dsrcy, dwidth, dheight; - int bmwidth, bmheight; - - cairo_surface_t *bmsurface = bitmap->surface; - - /* Bail early if we can */ - if (width == 0 || height == 0) - /* Nothing to plot */ - return true; - if ((x > (cliprect.x + cliprect.width)) || - ((x + width) < cliprect.x) || - (y > (cliprect.y + cliprect.height)) || - ((y + height) < cliprect.y)) { - /* Image completely outside clip region */ - return true; - } - - /* Get clip rectangle / image rectangle edge differences */ - x0 = cliprect.x - x; - y0 = cliprect.y - y; - x1 = (x + width) - (cliprect.x + cliprect.width); - y1 = (y + height) - (cliprect.y + cliprect.height); - - /* Set initial draw geometry */ - dsrcx = x; - dsrcy = y; - dwidth = width; - dheight = height; - - /* Manually clip draw coordinates to area of image to be rendered */ - if (x0 > 0) { - /* Clip left */ - dsrcx += x0; - dwidth -= x0; - } - if (y0 > 0) { - /* Clip top */ - dsrcy += y0; - dheight -= y0; - } - if (x1 > 0) { - /* Clip right */ - dwidth -= x1; - } - if (y1 > 0) { - /* Clip bottom */ - dheight -= y1; - } - - if (dwidth == 0 || dheight == 0) - /* Nothing to plot */ - return true; - - bmwidth = cairo_image_surface_get_width(bmsurface); - bmheight = cairo_image_surface_get_height(bmsurface); - - /* Render the bitmap */ - if ((bmwidth == width) && (bmheight == height)) { - /* Bitmap is not scaled */ - /* Plot the bitmap */ - cairo_set_source_surface(current_cr, bmsurface, x, y); - cairo_rectangle(current_cr, dsrcx, dsrcy, dwidth, dheight); - cairo_fill(current_cr); - - } else { - /* Bitmap is scaled */ - if ((bitmap->scsurface != NULL) && - ((cairo_image_surface_get_width(bitmap->scsurface) != width) || - (cairo_image_surface_get_height(bitmap->scsurface) != height))){ - cairo_surface_destroy(bitmap->scsurface); - bitmap->scsurface = NULL; - } - - if (bitmap->scsurface == NULL) { - bitmap->scsurface = cairo_surface_create_similar(bmsurface,CAIRO_CONTENT_COLOR_ALPHA, width, height); - cairo_t *cr = cairo_create(bitmap->scsurface); - - /* Scale *before* setting the source surface (1) */ - cairo_scale(cr, (double)width / bmwidth, (double)height / bmheight); - cairo_set_source_surface(cr, bmsurface, 0, 0); - - /* To avoid getting the edge pixels blended with 0 - * alpha, which would occur with the default - * EXTEND_NONE. Use EXTEND_PAD for 1.2 or newer (2) - */ - cairo_pattern_set_extend(cairo_get_source(cr), - CAIRO_EXTEND_REFLECT); - - /* Replace the destination with the source instead of - * overlaying - */ - cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); - - /* Do the actual drawing */ - cairo_paint(cr); - - cairo_destroy(cr); - - } - /* Plot the scaled bitmap */ - cairo_set_source_surface(current_cr, bitmap->scsurface, x, y); - cairo_rectangle(current_cr, dsrcx, dsrcy, dwidth, dheight); - cairo_fill(current_cr); - - - } - - return true; -} - -static bool nsgtk_plot_bitmap(int x, int y, int width, int height, - struct bitmap *bitmap, colour bg, - bitmap_flags_t flags) -{ - int doneheight = 0, donewidth = 0; - bool repeat_x = (flags & BITMAPF_REPEAT_X); - bool repeat_y = (flags & BITMAPF_REPEAT_Y); - - /* Bail early if we can */ - if (width == 0 || height == 0) - /* Nothing to plot */ - return true; - - if (!(repeat_x || repeat_y)) { - /* Not repeating at all, so just pass it on */ - return nsgtk_plot_pixbuf(x, y, width, height, bitmap, bg); - } - - if (y > cliprect.y) { - doneheight = (cliprect.y - height) + ((y - cliprect.y) % height); - } else { - doneheight = y; - } - - while (doneheight < (cliprect.y + cliprect.height)) { - if (x > cliprect.x) { - donewidth = (cliprect.x - width) + ((x - cliprect.x) % width); - } else { - donewidth = x; - } - - while (donewidth < (cliprect.x + cliprect.width)) { - nsgtk_plot_pixbuf(donewidth, doneheight, - width, height, bitmap, bg); - donewidth += width; - if (!repeat_x) - break; - } - doneheight += height; - - if (!repeat_y) - break; - } - - return true; -} - -static bool nsgtk_plot_path(const float *p, unsigned int n, colour fill, float width, - colour c, const float transform[6]) -{ - unsigned int i; - cairo_matrix_t old_ctm, n_ctm; - - if (n == 0) - return true; - - if (p[0] != PLOTTER_PATH_MOVE) { - LOG("Path does not start with move"); - return false; - } - - - /* Save CTM */ - cairo_get_matrix(current_cr, &old_ctm); - - /* Set up line style and width */ - cairo_set_line_width(current_cr, 1); - nsgtk_set_solid(); - - /* Load new CTM */ - n_ctm.xx = transform[0]; - n_ctm.yx = transform[1]; - n_ctm.xy = transform[2]; - n_ctm.yy = transform[3]; - n_ctm.x0 = transform[4]; - n_ctm.y0 = transform[5]; - - cairo_set_matrix(current_cr, &n_ctm); - - /* Construct path */ - for (i = 0; i < n; ) { - if (p[i] == PLOTTER_PATH_MOVE) { - cairo_move_to(current_cr, p[i+1], p[i+2]); - i += 3; - } else if (p[i] == PLOTTER_PATH_CLOSE) { - cairo_close_path(current_cr); - i++; - } else if (p[i] == PLOTTER_PATH_LINE) { - cairo_line_to(current_cr, p[i+1], p[i+2]); - i += 3; - } else if (p[i] == PLOTTER_PATH_BEZIER) { - cairo_curve_to(current_cr, p[i+1], p[i+2], - p[i+3], p[i+4], - p[i+5], p[i+6]); - i += 7; - } else { - LOG("bad path command %f", p[i]); - /* Reset matrix for safety */ - cairo_set_matrix(current_cr, &old_ctm); - return false; - } - } - - /* Restore original CTM */ - cairo_set_matrix(current_cr, &old_ctm); - - /* Now draw path */ - if (fill != NS_TRANSPARENT) { - nsgtk_set_colour(fill); - - if (c != NS_TRANSPARENT) { - /* Fill & Stroke */ - cairo_fill_preserve(current_cr); - nsgtk_set_colour(c); - cairo_stroke(current_cr); - } else { - /* Fill only */ - cairo_fill(current_cr); - } - } else if (c != NS_TRANSPARENT) { - /* Stroke only */ - nsgtk_set_colour(c); - cairo_stroke(current_cr); - } - - return true; -} - -/** GTK plotter table */ -const struct plotter_table nsgtk_plotters = { - .clip = nsgtk_plot_clip, - .arc = nsgtk_plot_arc, - .disc = nsgtk_plot_disc, - .line = nsgtk_plot_line, - .rectangle = nsgtk_plot_rectangle, - .polygon = nsgtk_plot_polygon, - .path = nsgtk_plot_path, - .bitmap = nsgtk_plot_bitmap, - .text = nsgtk_plot_text, - .option_knockout = true -}; - - - |