netsurf/gtk/gtk_plotters.c

209 lines
4.7 KiB
C

/*
* This file is part of NetSurf, http://netsurf.sourceforge.net/
* Licensed under the GNU General Public License,
* http://www.opensource.org/licenses/gpl-license
* Copyright 2004 James Bursa <bursa@users.sourceforge.net>
*/
/** \file
* Target independent plotting (GDK / GTK+ implementation).
*/
#include <gdk/gdk.h>
#include <gtk/gtk.h>
#include "netsurf/desktop/plotters.h"
#include "netsurf/render/font.h"
#include "netsurf/utils/log.h"
extern GtkWidget *current_widget;
extern GdkDrawable *current_drawable;
extern GdkGC *current_gc;
static bool nsgtk_plot_clg(colour c);
static bool nsgtk_plot_rectangle(int x0, int y0, int width, int height,
int line_width, colour c, bool dotted, bool dashed);
static bool nsgtk_plot_line(int x0, int y0, int x1, int y1, int width,
colour c, bool dotted, bool dashed);
static bool nsgtk_plot_polygon(int *p, unsigned int n, colour fill);
static bool nsgtk_plot_fill(int x0, int y0, int x1, int y1, colour c);
static bool nsgtk_plot_clip(int clip_x0, int clip_y0,
int clip_x1, int clip_y1);
static bool nsgtk_plot_text(int x, int y, struct css_style *style,
const char *text, size_t length, colour bg, colour c);
static bool nsgtk_plot_disc(int x, int y, int radius, colour colour);
static bool nsgtk_plot_bitmap(int x, int y, int width, int height,
struct bitmap *bitmap, colour bg);
static bool nsgtk_plot_bitmap_tile(int x, int y, int width, int height,
struct bitmap *bitmap, colour bg,
bool repeat_x, bool repeat_y);
static bool nsgtk_plot_group_start(const char *name);
static bool nsgtk_plot_group_end(void);
static void nsgtk_set_colour(colour c);
struct plotter_table plot;
const struct plotter_table nsgtk_plotters = {
nsgtk_plot_clg,
nsgtk_plot_rectangle,
nsgtk_plot_line,
nsgtk_plot_polygon,
nsgtk_plot_fill,
nsgtk_plot_clip,
nsgtk_plot_text,
nsgtk_plot_disc,
nsgtk_plot_bitmap,
nsgtk_plot_bitmap_tile,
nsgtk_plot_group_start,
nsgtk_plot_group_end
};
bool nsgtk_plot_clg(colour c)
{
return true;
}
bool nsgtk_plot_rectangle(int x0, int y0, int width, int height,
int line_width, colour c, bool dotted, bool dashed)
{
nsgtk_set_colour(c);
gdk_draw_rectangle(current_drawable, current_gc,
FALSE, x0, y0, width, height);
return true;
}
bool nsgtk_plot_line(int x0, int y0, int x1, int y1, int width,
colour c, bool dotted, bool dashed)
{
nsgtk_set_colour(c);
gdk_draw_line(current_drawable, current_gc,
x0, y0, x1, y1);
return true;
}
bool nsgtk_plot_polygon(int *p, unsigned int n, colour fill)
{
unsigned int i;
GdkPoint q[n];
for (i = 0; i != n; i++) {
q[i].x = p[i * 2];
q[i].y = p[i * 2 + 1];
}
nsgtk_set_colour(fill);
gdk_draw_polygon(current_drawable, current_gc,
TRUE, q, n);
return true;
}
bool nsgtk_plot_fill(int x0, int y0, int x1, int y1, colour c)
{
nsgtk_set_colour(c);
gdk_draw_rectangle(current_drawable, current_gc,
TRUE, x0, y0, x1 - x0, y1 - y0);
return true;
}
bool nsgtk_plot_clip(int clip_x0, int clip_y0,
int clip_x1, int clip_y1)
{
GdkRectangle clip = { clip_x0, clip_y0,
clip_x1 - clip_x0 + 1, clip_y1 - clip_y0 + 1 };
gdk_gc_set_clip_rectangle(current_gc, &clip);
return true;
}
bool nsgtk_plot_text(int x, int y, struct css_style *style,
const char *text, size_t length, colour bg, colour c)
{
return nsfont_paint(style, text, length, x, y, c);
}
bool nsgtk_plot_disc(int x, int y, int radius, colour colour)
{
return true;
}
bool nsgtk_plot_bitmap(int x, int y, int width, int height,
struct bitmap *bitmap, colour bg)
{
GdkPixbuf *pixbuf = (GdkPixbuf *) bitmap;
if (gdk_pixbuf_get_width(pixbuf) == width &&
gdk_pixbuf_get_height(pixbuf) == height) {
gdk_draw_pixbuf(current_drawable, current_gc,
pixbuf,
0, 0,
x, y,
width, height,
GDK_RGB_DITHER_NORMAL, 0, 0);
} else {
GdkPixbuf *scaled;
scaled = gdk_pixbuf_scale_simple(pixbuf,
width, height,
GDK_INTERP_BILINEAR);
if (!scaled)
return false;
gdk_draw_pixbuf(current_drawable, current_gc,
scaled,
0, 0,
x, y,
width, height,
GDK_RGB_DITHER_NORMAL, 0, 0);
g_object_unref(scaled);
}
return true;
}
bool nsgtk_plot_bitmap_tile(int x, int y, int width, int height,
struct bitmap *bitmap, colour bg,
bool repeat_x, bool repeat_y)
{
return true;
}
bool nsgtk_plot_group_start(const char *name)
{
return true;
}
bool nsgtk_plot_group_end(void)
{
return true;
}
void nsgtk_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(gtk_widget_get_colormap(current_widget),
&colour);
gdk_gc_set_foreground(current_gc, &colour);
}