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/* FreeJ
* (c) Copyright 2009 Denis Roio <jaromil@dyne.org>
*
* This source code is free software; you can redistribute it and/or
* modify it under the terms of the GNU Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This source code 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. Please refer
* to the GNU Public License for more details.
*
* You should have received a copy of the GNU Public License along
* with this source code; if not, write to: Free Software Foundation,
* Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include <config.h>
#ifdef WITH_CAIRO
#include <jutils.h>
#include <context.h>
#include <cairo_layer.h>
#include <jsparser_data.h>
#include <factory.h>
// our objects are allowed to be created trough the factory engine
FACTORY_REGISTER_INSTANTIATOR(Layer, CairoLayer, VectorLayer, cairo);
CairoColor::CairoColor(cairo_t *cai) :Color() {
r = 0.;
g = 0.;
b = 0.;
a = 255.;
cairo = cai;
}
CairoColor::~CairoColor() { }
void CairoColor::set() {
double sr = r / 255.;
double sg = g / 255.;
double sb = b / 255.;
double sa = a / 255.;
func("Color::set r[%.2f] g[%.2f] b[%.2f] a[%.2f]",sr,sg,sb,sa);
cairo_set_source_rgba(cairo, sr, sg, sb, sa);
};
CairoLayer::CairoLayer()
:Layer() {
surf = NULL;
cairo = NULL;
pixels = NULL;
color = NULL;
saved_color = NULL;
set_name("VEC");
set_filename("/vector layer");
jsclass = &vector_layer_class;
}
CairoLayer::~CairoLayer() {
if(cairo) cairo_destroy(cairo);
if(surf) cairo_surface_destroy(surf);
if(pixels) free(pixels);
if(color) free(color);
}
bool CairoLayer::_init() {
// create the surface
stride = cairo_format_stride_for_width
(CAIRO_FORMAT_ARGB32, geo.w);
pixels = malloc (stride * geo.h);
surf = cairo_image_surface_create_for_data
((unsigned char*)pixels, CAIRO_FORMAT_ARGB32, geo.w, geo.h, stride);
// create the drawing context
cairo = cairo_create(surf);
// This function references target, so you can immediately call
// cairo_surface_destroy() on it if you don't need to maintain a
// separate reference to it.
color = new CairoColor( cairo );
opened = true;
return(true);
}
void *CairoLayer::feed() {
return(pixels);
}
bool CairoLayer::open(const char *file) {
/* we don't need this */
return true;
}
void CairoLayer::close() {
/* neither this */
return;
}
///////////////////////////////////////////////
// public methods exported to language bindings
// Cairo API
void CairoLayer::save() { cairo_save(cairo); }
void CairoLayer::restore() { cairo_restore(cairo); }
void CairoLayer::new_path() { cairo_new_path(cairo); }
void CairoLayer::close_path() { cairo_close_path(cairo); }
void CairoLayer::scale(double xx, double yy) {
func("%s :: x[%.2f] y[%.2f]", __FUNCTION__, xx, yy);
cairo_scale(cairo, xx, yy); }
void CairoLayer::rotate(double angle) { cairo_rotate(cairo, angle); }
void CairoLayer::translate(int xx, int yy) {
func("%s :: x[%.2f] y[%.2f]", __FUNCTION__, xx, yy);
cairo_translate(cairo, xx, yy);
}
void CairoLayer::move_to(double xx, double yy) {
func("%s :: x[%.2f] y[%.2f]", __FUNCTION__, xx, yy);
cairo_move_to(cairo, xx, yy);
}
void CairoLayer::line_to(double xx, double yy) {
func("%s :: x[%.2f] y[%.2f]", __FUNCTION__, xx, yy);
cairo_line_to(cairo, xx, yy);
}
void CairoLayer::curve_to(int x1, int y1, int x2, int y2, int x3, int y3) {
cairo_curve_to(cairo, x1, y1, x2, y2, x3, y3); }
void CairoLayer::arc(double xc, double yc, double radius, double angle1, double angle2) {
cairo_arc(cairo, xc, yc, radius, angle1, angle2); }
void CairoLayer::rect(double x1, double y1, double x2, double y2) {
cairo_rectangle(cairo, x1, y1, x2, y2);
}
void CairoLayer::fill() { cairo_fill(cairo); }
void CairoLayer::stroke() { cairo_stroke(cairo); }
void CairoLayer::set_line_width(double wid) { cairo_set_line_width(cairo, wid); }
int CairoLayer::get_line_width() { return cairo_get_line_width(cairo); }
// Mozilla's GFX compatibility API
void CairoLayer::quad_curve_to(double x1, double y1, double x2, double y2) {
double xc, yc;
cairo_get_current_point(cairo, &xc, &yc);
cairo_curve_to(cairo,
(xc + x1 * 2.0) / 3.0,
(yc + y1 * 2.0) / 3.0,
(x1 * 2.0 + x2) / 3.0,
(y1 * 2.0 + y2) / 3.0,
x2, y2);
}
void CairoLayer::fill_rect(double x1, double y1, double x2, double y2) {
cairo_save(cairo);
cairo_rectangle(cairo, x1, y1, x2, y2);
cairo_fill(cairo);
cairo_restore(cairo);
}
// Color facilities
void CairoLayer::push_color() {
if(saved_color) {
warning("previously saved color lost");
delete saved_color;
}
saved_color = color;
color = new CairoColor(cairo);
}
void CairoLayer::pop_color() {
if(!saved_color) {
warning("no previourly saved color found");
return;
}
delete color;
color = saved_color;
saved_color = NULL;
func("popped back color: r[%.2f] g[%.2f] b[%.2f] a[%.2f]",
color->r, color->g, color->b, color->a);
}
#endif
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