diff options
Diffstat (limited to 'gtk/gtk_print.c')
-rw-r--r-- | gtk/gtk_print.c | 573 |
1 files changed, 573 insertions, 0 deletions
diff --git a/gtk/gtk_print.c b/gtk/gtk_print.c new file mode 100644 index 000000000..6056eec61 --- /dev/null +++ b/gtk/gtk_print.c @@ -0,0 +1,573 @@ +/* + * Copyright 2006 Rob Kendrick <rjek@rjek.com> + * Copyright 2005 James Bursa <bursa@users.sourceforge.net> + * Copyright 2008 Adam Blokus <adamblokus@gmail.com> + * + * 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 printing (implementation). + * All the functions and structures necessary for printing( signal handlers, + * plotters, printer) are here. + * Most of the plotters have been copied from the gtk_plotters.c file. + */ + + +#include <math.h> +#include <gdk/gdk.h> +#include <gtk/gtk.h> +#include "desktop/plotters.h" +#include "gtk/font_pango.h" +#include "gtk/gtk_scaffolding.h" +#include "render/font.h" +#include "utils/log.h" +#include "desktop/options.h" +#include "gtk/options.h" +#include "gtk/gtk_bitmap.h" + +#include "desktop/print.h" +#include "desktop/printer.h" +#include "content/content.h" +#include "gtk_print.h" +#include "utils/utils.h" + +cairo_t *gtk_print_current_cr; +static struct print_settings* settings; +struct content *content_to_print; + +static bool nsgtk_print_plot_clg(colour c); +static bool nsgtk_print_plot_rectangle(int x0, int y0, int width, int height, + int line_width, colour c, bool dotted, bool dashed); +static bool nsgtk_print_plot_line(int x0, int y0, int x1, int y1, int width, + colour c, bool dotted, bool dashed); +static bool nsgtk_print_plot_polygon(int *p, unsigned int n, colour fill); +static bool nsgtk_print_plot_path(float *p, unsigned int n, colour fill, float width, + colour c, float *transform); +static bool nsgtk_print_plot_fill(int x0, int y0, int x1, int y1, colour c); +static bool nsgtk_print_plot_clip(int clip_x0, int clip_y0, + int clip_x1, int clip_y1); +static bool nsgtk_print_plot_text(int x, int y, const struct css_style *style, + const char *text, size_t length, colour bg, colour c); +static bool nsgtk_print_plot_disc(int x, int y, int radius, colour c, bool filled); +static bool nsgtk_print_plot_arc(int x, int y, int radius, int angle1, int angle2, + colour c); +static bool nsgtk_print_plot_bitmap(int x, int y, int width, int height, + struct bitmap *bitmap, colour bg, struct content *content); +static bool nsgtk_print_plot_bitmap_tile(int x, int y, int width, int height, + struct bitmap *bitmap, colour bg, + bool repeat_x, bool repeat_y, struct content *content); + +static void nsgtk_print_set_solid(void); /**< Set for drawing solid lines */ +static void nsgtk_print_set_dotted(void); /**< Set for drawing dotted lines */ +static void nsgtk_print_set_dashed(void); /**< Set for drawing dashed lines */ + + +static void nsgtk_print_set_colour(colour c); +static void nsgtk_print_plot_caret(int x, int y, int h); + + +static bool gtk_print_font_paint(const struct css_style *style, + const char *string, size_t length, + int x, int y, colour c); + + +static bool gtk_print_begin(struct print_settings* settings); +static bool gtk_print_next_page(void); +static void gtk_print_end(void); + + +static GdkRectangle cliprect; + +struct plotter_table plot; + +static const struct plotter_table nsgtk_print_plotters = { + nsgtk_print_plot_clg, + nsgtk_print_plot_rectangle, + nsgtk_print_plot_line, + nsgtk_print_plot_polygon, + nsgtk_print_plot_fill, + nsgtk_print_plot_clip, + nsgtk_print_plot_text, + nsgtk_print_plot_disc, + nsgtk_print_plot_arc, + nsgtk_print_plot_bitmap, + nsgtk_print_plot_bitmap_tile, + NULL, + NULL, + NULL, + nsgtk_print_plot_path +}; + +static const struct printer gtk_printer= { + &nsgtk_print_plotters, + gtk_print_begin, + gtk_print_next_page, + gtk_print_end +}; + +bool nsgtk_print_plot_clg(colour c) +{ + return true; +} + +bool nsgtk_print_plot_rectangle(int x0, int y0, int width, int height, + int line_width, colour c, bool dotted, bool dashed) +{ + LOG(("Plotting rectangle. width: %i ; height: %i", width, height)); + nsgtk_print_set_colour(c); + if (dotted) + nsgtk_print_set_dotted(); + else if (dashed) + nsgtk_print_set_dashed(); + else + nsgtk_print_set_solid(); + + + if (line_width == 0) + line_width = 1; + + cairo_set_line_width(gtk_print_current_cr, line_width); + cairo_rectangle(gtk_print_current_cr, x0, y0, width, height); + cairo_stroke(gtk_print_current_cr); + + return true; +} + + +bool nsgtk_print_plot_line(int x0, int y0, int x1, int y1, int width, + colour c, bool dotted, bool dashed) +{ + nsgtk_print_set_colour(c); + if (dotted) + nsgtk_print_set_dotted(); + else if (dashed) + nsgtk_print_set_dashed(); + else + nsgtk_print_set_solid(); + + + if (width == 0) + width = 1; + + cairo_set_line_width(gtk_print_current_cr, width); + cairo_move_to(gtk_print_current_cr, x0, y0 - 0.5); + cairo_line_to(gtk_print_current_cr, x1, y1 - 0.5); + cairo_stroke(gtk_print_current_cr); + + return true; +} + + +bool nsgtk_print_plot_polygon(int *p, unsigned int n, colour fill) +{ + + LOG(("Plotting polygon.")); + unsigned int i; + + nsgtk_print_set_colour(fill); + nsgtk_print_set_solid(); + + + cairo_set_line_width(gtk_print_current_cr, 0); + cairo_move_to(gtk_print_current_cr, p[0], p[1]); + LOG(("Starting line at: %i\t%i",p[0],p[1])); + for (i = 1; i != n; i++) { + cairo_line_to(gtk_print_current_cr, p[i * 2], p[i * 2 + 1]); + LOG(("Drawing line to: %i\t%i",p[i * 2], p[i * 2 + 1])); + } + cairo_fill(gtk_print_current_cr); + cairo_stroke(gtk_print_current_cr); + + return true; +} + + +bool nsgtk_print_plot_fill(int x0, int y0, int x1, int y1, colour c) +{ + LOG(("Plotting fill. x0: %i ;\t y0: %i ;\t x1: %i ;\t y1: %i", x0,y0,x1,y1)); + nsgtk_print_set_colour(c); + nsgtk_print_set_solid(); + + /*Normalize boundaries of the area - to prevent overflows. + See comment in pdf_plot_fill. + */ + x0 = min(max(x0, 0), settings->page_width); + y0 = min(max(y0, 0), settings->page_height); + x1 = min(max(x1, 0), settings->page_width); + y1 = min(max(y1, 0), settings->page_height); + + cairo_set_line_width(gtk_print_current_cr, 0); + cairo_rectangle(gtk_print_current_cr, x0, y0, x1 - x0, y1 - y0); + cairo_fill(gtk_print_current_cr); + cairo_stroke(gtk_print_current_cr); + + return true; +} + + +bool nsgtk_print_plot_clip(int clip_x0, int clip_y0, + int clip_x1, int clip_y1) +{ + LOG(("Clipping. x0: %i ;\t y0: %i ;\t x1: %i ;\t y1: %i", + clip_x0,clip_y0,clip_x1,clip_y1)); + + /*Normalize cllipping area - to prevent overflows. + See comment in pdf_plot_fill. + */ + clip_x0 = min(max(clip_x0, 0), settings->page_width); + clip_y0 = min(max(clip_y0, 0), settings->page_height); + clip_x1 = min(max(clip_x1, 0), settings->page_width); + clip_y1 = min(max(clip_y1, 0), settings->page_height); + + + cairo_reset_clip(gtk_print_current_cr); + cairo_rectangle(gtk_print_current_cr, clip_x0, clip_y0, + clip_x1 - clip_x0, clip_y1 - clip_y0); + cairo_clip(gtk_print_current_cr); + + cliprect.x = clip_x0; + cliprect.y = clip_y0; + cliprect.width = clip_x1 - clip_x0; + cliprect.height = clip_y1 - clip_y0; +// gdk_gc_set_clip_rectangle(gtk_print_current_gc, &cliprect); + return true; + +} + + +bool nsgtk_print_plot_text(int x, int y, const struct css_style *style, + const char *text, size_t length, colour bg, colour c) +{ + return gtk_print_font_paint(style, text, length, x, y, c); +} + + +bool nsgtk_print_plot_disc(int x, int y, int radius, colour c, bool filled) +{ + nsgtk_print_set_colour(c); + nsgtk_print_set_solid(); + + if (filled) + cairo_set_line_width(gtk_print_current_cr, 0); + else + cairo_set_line_width(gtk_print_current_cr, 1); + + cairo_arc(gtk_print_current_cr, x, y, radius, 0, M_PI * 2); + + if (filled) + cairo_fill(gtk_print_current_cr); + + cairo_stroke(gtk_print_current_cr); + + + return true; +} + +bool nsgtk_print_plot_arc(int x, int y, int radius, int angle1, int angle2, colour c) +{ + nsgtk_print_set_colour(c); + nsgtk_print_set_solid(); + + cairo_set_line_width(gtk_print_current_cr, 1); + cairo_arc(gtk_print_current_cr, x, y, radius, + (angle1 + 90) * (M_PI / 180), + (angle2 + 90) * (M_PI / 180)); + cairo_stroke(gtk_print_current_cr); + + + return true; +} + +static bool nsgtk_print_plot_pixbuf(int x, int y, int width, int height, + GdkPixbuf *pixbuf, colour bg) +{ + /* XXX: This currently ignores the background colour supplied. + * Does this matter? + */ + + if (width == 0 || height == 0) + return true; + + if (gdk_pixbuf_get_width(pixbuf) == width && + gdk_pixbuf_get_height(pixbuf) == height) { + gdk_cairo_set_source_pixbuf(gtk_print_current_cr, pixbuf, x, y); + cairo_paint(gtk_print_current_cr); + + } else { + GdkPixbuf *scaled; + scaled = gdk_pixbuf_scale_simple(pixbuf, + width, height, + /* plotting for the printer doesn't have to be fast + * so we can use always the interp_style + * that gives better quality + */ + GDK_INTERP_BILINEAR + ); + if (!scaled) + return false; + gdk_cairo_set_source_pixbuf(gtk_print_current_cr, scaled, x, y); + cairo_paint(gtk_print_current_cr); + + g_object_unref(scaled); + } + + return true; +} + +bool nsgtk_print_plot_bitmap(int x, int y, int width, int height, + struct bitmap *bitmap, colour bg, struct content *content) +{ + GdkPixbuf *pixbuf = gtk_bitmap_get_primary(bitmap); + return nsgtk_print_plot_pixbuf(x, y, width, height, pixbuf, bg); +} + +bool nsgtk_print_plot_bitmap_tile(int x, int y, int width, int height, + struct bitmap *bitmap, colour bg, + bool repeat_x, bool repeat_y, struct content *content) +{ + int doneheight = 0, donewidth = 0; + GdkPixbuf *primary; + GdkPixbuf *pretiled; + + if (!(repeat_x || repeat_y)) { + /* Not repeating at all, so just pass it on */ + return nsgtk_print_plot_bitmap(x,y,width,height,bitmap,bg,content); + } + + if (repeat_x && !repeat_y) + pretiled = gtk_bitmap_get_pretile_x(bitmap); + if (repeat_x && repeat_y) + pretiled = gtk_bitmap_get_pretile_xy(bitmap); + if (!repeat_x && repeat_y) + pretiled = gtk_bitmap_get_pretile_y(bitmap); + primary = gtk_bitmap_get_primary(bitmap); + /* use the primary and pretiled widths to scale the w/h provided */ + width *= gdk_pixbuf_get_width(pretiled); + width /= gdk_pixbuf_get_width(primary); + height *= gdk_pixbuf_get_height(pretiled); + height /= gdk_pixbuf_get_height(primary); + + 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_print_plot_pixbuf(donewidth, doneheight, + width, height, pretiled, bg); + donewidth += width; + if (!repeat_x) break; + } + doneheight += height; + if (!repeat_y) break; + } + + + return true; +} + +bool nsgtk_print_plot_path(float *p, unsigned int n, colour fill, float width, + colour c, float *transform) +{ + /* Only the internal SVG renderer uses this plot call currently, + * and the GTK version uses librsvg. Thus, we ignore this complexity, + * and just return true obliviously. + */ + + return true; +} + +void nsgtk_print_set_colour(colour c) +{ + int r, g, b; + GdkColor colour; + + r = c & 0xff; + g = (c & 0xff00) >> 8; + b = (c & 0xff0000) >> 16; + + colour.red = r | (r << 8); + colour.green = g | (g << 8); + colour.blue = b | (b << 8); + colour.pixel = (r << 16) | (g << 8) | b; + + gdk_color_alloc(gdk_colormap_get_system(), + &colour); +// gdk_gc_set_foreground(gtk_print_current_gc, &colour); + + cairo_set_source_rgba(gtk_print_current_cr, r / 255.0, + g / 255.0, b / 255.0, 1.0); + +} + + +void nsgtk_print_set_solid() +{ + + double dashes = 0; + + cairo_set_dash(gtk_print_current_cr, &dashes, 0, 0); + +} + +void nsgtk_print_set_dotted() +{ + double cdashes = 1; + gint8 dashes[] = { 1, 1 }; + + cairo_set_dash(gtk_print_current_cr, &cdashes, 1, 0); + +} + +void nsgtk_print_set_dashed() +{ + double cdashes = 3; + gint8 dashes[] = { 3, 3 }; + + cairo_set_dash(gtk_print_current_cr, &cdashes, 1, 0); +} + +bool gtk_print_font_paint(const struct css_style *style, + const char *string, size_t length, + int x, int y, colour c) +{ + PangoFontDescription *desc; + PangoLayout *layout; + gint size; + PangoLayoutLine *line; + + int width, height; + + + if (length == 0) + return true; + + desc = nsfont_style_to_description(style); + size = (gint)((double)pango_font_description_get_size(desc) * settings->scale); + if (pango_font_description_get_size_is_absolute(desc)) + pango_font_description_set_absolute_size(desc, size); + else + pango_font_description_set_size(desc, size); + + + layout = pango_cairo_create_layout(gtk_print_current_cr); + + pango_layout_set_font_description(layout, desc); + pango_layout_set_text(layout, string, length); + + line = pango_layout_get_line(layout, 0); + + cairo_move_to(gtk_print_current_cr, x, y); + nsgtk_print_set_colour(c); + pango_cairo_show_layout_line(gtk_print_current_cr, line); + + + g_object_unref(layout); + pango_font_description_free(desc); + + return true; +} + + + +static bool gtk_print_begin(struct print_settings* settings) +{ + return true; +} +static bool gtk_print_next_page() +{ + return true; +} +static void gtk_print_end() +{ +} + +/** Handle the begin_print signal from the GtkPrintOperation + * \param operation the operation which emited the signal + * \param context the print context used to set up the pages + * \param user_data nothing in here + */ + +void gtk_print_signal_begin_print (GtkPrintOperation *operation, + GtkPrintContext *context, + gpointer user_data) +{ + + int page_number; + double height_on_page, height_to_print; + + LOG(("Begin print")); + + + settings = print_make_settings(DEFAULT); + + settings->margins[MARGINTEXT] = 0; + settings->margins[MARGINTOP] = 0; + settings->margins[MARGINLEFT] = 0; + settings->margins[MARGINBOTTOM] = 0; + settings->margins[MARGINRIGHT] = 0; + settings->page_width = gtk_print_context_get_width(context); + settings->page_height = gtk_print_context_get_height(context); + settings->scale = 0.7; + settings->font_func = &nsfont; + + print_set_up(content_to_print, >k_printer, settings, &height_to_print); + + LOG(("page_width: %f ;page_height: %f; content height: %lf",settings->page_width, + settings->page_height, height_to_print)); + + height_on_page = settings->page_height; + height_on_page = height_on_page - settings->margins[MARGINTOP] + - settings->margins[MARGINBOTTOM]; + height_to_print *= settings->scale; + + page_number = height_to_print / height_on_page; + if (height_to_print - page_number * height_on_page > 0) + page_number += 1; + + + gtk_print_operation_set_n_pages(operation, page_number); +} + +/** Handle the draw_page signal from the GtkPrintOperation. + * This function changes only the cairo context to print on. + */ + +void gtk_print_signal_draw_page(GtkPrintOperation *operation, + GtkPrintContext *context, + gint page_nr, + gpointer user_data) +{ + LOG(("Draw Page")); + gtk_print_current_cr = gtk_print_context_get_cairo_context(context); + print_draw_next_page(>k_printer, settings); +} + +/** Handle the end_print signal from the GtkPrintOperation. + * This functions calls only the print_cleanup function from the print interface + */ + +void gtk_print_signal_end_print(GtkPrintOperation *operation, + GtkPrintContext *context, + gpointer user_data) +{ + LOG(("End print")); + print_cleanup(content_to_print, >k_printer); +} |