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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Authors:
* Theodore Janeczko
*
* Copyright (C) Theodore Janeczko 2012 <flutterguy317@gmail.com>
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#include <glibmm.h>
#include <gtkmm/icontheme.h>
#include "display/cairo-utils.h"
#include "highlight-picker.h"
namespace Inkscape {
namespace UI {
namespace Widget {
HighlightPicker::HighlightPicker() :
Glib::ObjectBase(typeid(HighlightPicker)),
Gtk::CellRendererPixbuf(),
_property_active(*this, "active", 0)
{
property_mode() = Gtk::CELL_RENDERER_MODE_ACTIVATABLE;
}
HighlightPicker::~HighlightPicker()
= default;
void HighlightPicker::get_preferred_height_vfunc(Gtk::Widget& widget,
int& min_h,
int& nat_h) const
{
Gtk::CellRendererPixbuf::get_preferred_height_vfunc(widget, min_h, nat_h);
if (min_h) {
min_h += (min_h) >> 1;
}
if (nat_h) {
nat_h += (nat_h) >> 1;
}
}
void HighlightPicker::get_preferred_width_vfunc(Gtk::Widget& widget,
int& min_w,
int& nat_w) const
{
Gtk::CellRendererPixbuf::get_preferred_width_vfunc(widget, min_w, nat_w);
if (min_w) {
min_w += (min_w) >> 1;
}
if (nat_w) {
nat_w += (nat_w) >> 1;
}
}
void HighlightPicker::render_vfunc( const Cairo::RefPtr<Cairo::Context>& cr,
Gtk::Widget& widget,
const Gdk::Rectangle& background_area,
const Gdk::Rectangle& cell_area,
Gtk::CellRendererState flags )
{
GdkRectangle carea;
cairo_surface_t *s = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, 10, 20);
cairo_t *ct = cairo_create(s);
/* Transparent area */
carea.x = 0;
carea.y = 0;
carea.width = 10;
carea.height = 20;
cairo_pattern_t *checkers = ink_cairo_pattern_create_checkerboard();
cairo_rectangle(ct, carea.x, carea.y, carea.width, carea.height / 2);
cairo_set_source(ct, checkers);
cairo_fill_preserve(ct);
ink_cairo_set_source_rgba32(ct, _property_active.get_value());
cairo_fill(ct);
cairo_pattern_destroy(checkers);
cairo_rectangle(ct, carea.x, carea.y + carea.height / 2, carea.width, carea.height / 2);
ink_cairo_set_source_rgba32(ct, _property_active.get_value() | 0x000000ff);
cairo_fill(ct);
cairo_rectangle(ct, carea.x, carea.y, carea.width, carea.height);
ink_cairo_set_source_rgba32(ct, 0x333333ff);
cairo_set_line_width(ct, 2);
cairo_stroke(ct);
cairo_destroy(ct);
cairo_surface_flush(s);
GdkPixbuf* pixbuf = gdk_pixbuf_new_from_data( cairo_image_surface_get_data(s),
GDK_COLORSPACE_RGB, TRUE, 8,
10, 20, cairo_image_surface_get_stride(s),
ink_cairo_pixbuf_cleanup, s);
convert_pixbuf_argb32_to_normal(pixbuf);
property_pixbuf() = Glib::wrap(pixbuf);
Gtk::CellRendererPixbuf::render_vfunc( cr, widget, background_area, cell_area, flags );
}
bool HighlightPicker::activate_vfunc(GdkEvent* /*event*/,
Gtk::Widget& /*widget*/,
const Glib::ustring& /*path*/,
const Gdk::Rectangle& /*background_area*/,
const Gdk::Rectangle& /*cell_area*/,
Gtk::CellRendererState /*flags*/)
{
return false;
}
} // namespace Widget
} // namespace UI
} // namespace Inkscape
//should be okay to put this here
/**
* Converts GdkPixbuf's data to premultiplied ARGB.
* This function will convert a GdkPixbuf in place into Cairo's native pixel format.
* Note that this is a hack intended to save memory. When the pixbuf is in Cairo's format,
* using it with GTK will result in corrupted drawings.
*/
void
convert_pixbuf_normal_to_argb32(GdkPixbuf *pb)
{
convert_pixels_pixbuf_to_argb32(
gdk_pixbuf_get_pixels(pb),
gdk_pixbuf_get_width(pb),
gdk_pixbuf_get_height(pb),
gdk_pixbuf_get_rowstride(pb));
}
/**
* Converts GdkPixbuf's data back to its native format.
* Once this is done, the pixbuf can be used with GTK again.
*/
void
convert_pixbuf_argb32_to_normal(GdkPixbuf *pb)
{
convert_pixels_argb32_to_pixbuf(
gdk_pixbuf_get_pixels(pb),
gdk_pixbuf_get_width(pb),
gdk_pixbuf_get_height(pb),
gdk_pixbuf_get_rowstride(pb));
}
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
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