2 Copyright (C) 2005 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 #include <gtkmm2ext/pixscroller.h>
30 using namespace Gtkmm2ext;
32 PixScroller::PixScroller (Adjustment& a,
33 Glib::RefPtr<Gdk::Pixbuf> s,
34 Glib::RefPtr<Gdk::Pixbuf> r)
40 add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::POINTER_MOTION_MASK|Gdk::SCROLL_MASK);
42 adj.signal_value_changed().connect (mem_fun (*this, &PixScroller::adjustment_changed));
43 default_value = adj.get_value();
45 sliderrect.set_width(slider->get_width());
46 sliderrect.set_height(slider->get_height());
47 railrect.set_width(rail->get_width());
48 railrect.set_height(rail->get_height());
50 railrect.set_y(sliderrect.get_height() / 2);
53 overall_height = railrect.get_height() + sliderrect.get_height();
55 sliderrect.set_y((int) rint ((overall_height - sliderrect.get_height()) * (adj.get_upper() - adj.get_value())));
56 railrect.set_x((sliderrect.get_width() / 2) - 2);
60 PixScroller::on_size_request (GtkRequisition* requisition)
62 requisition->width = sliderrect.get_width();
63 requisition->height = overall_height;
67 PixScroller::on_expose_event (GdkEventExpose* ev)
69 GdkRectangle intersect;
70 Glib::RefPtr<Gdk::Window> win (get_window());
72 win->draw_rectangle (get_style()->get_bg_gc(get_state()), TRUE,
78 if (gdk_rectangle_intersect (railrect.gobj(), &ev->area, &intersect)) {
79 Glib::RefPtr<Gdk::GC> gc(get_style()->get_bg_gc(get_state()));
80 win->draw_pixbuf (gc, rail,
81 intersect.x - railrect.get_x(),
82 intersect.y - railrect.get_y(),
87 Gdk::RGB_DITHER_NONE, 0, 0);
90 if (gdk_rectangle_intersect (sliderrect.gobj(), &ev->area, &intersect)) {
91 Glib::RefPtr<Gdk::GC> gc(get_style()->get_fg_gc(get_state()));
92 // Glib::RefPtr<Gdk::Bitmap> mask (slider_mask);
95 gdk_gc_get_values(gc->gobj(), &values);
96 gc->set_clip_origin (sliderrect.get_x(), sliderrect.get_y());
97 // gc->set_clip_mask (mask);
98 win->draw_pixbuf (gc, slider,
99 intersect.x - sliderrect.get_x(),
100 intersect.y - sliderrect.get_y(),
105 Gdk::RGB_DITHER_NONE, 0, 0);
106 gc->set_clip_origin (values.clip_x_origin, values.clip_y_origin);
107 // gdk_gc_set_clip_mask (gc->gobj(), values.clip_mask);
115 PixScroller::on_button_press_event (GdkEventButton* ev)
117 switch (ev->button) {
119 if (!(ev->state & Gdk::SHIFT_MASK)) {
123 grab_window = ev->window;
136 PixScroller::on_button_release_event (GdkEventButton* ev)
140 if (ev->state & GDK_CONTROL_MASK) {
141 if (ev->state & GDK_MOD1_MASK) {
150 switch (ev->button) {
156 if (ev->y == grab_start) {
157 /* no motion - just a click */
160 if (ev->y < sliderrect.get_height()/2) {
164 fract = 1.0 - (ev->y - sliderrect.get_height()/2) / railrect.get_height();
167 fract = min (1.0, fract);
168 fract = max (0.0, fract);
170 adj.set_value (scale * fract * (adj.get_upper() - adj.get_lower()));
173 if (ev->state & Gdk::SHIFT_MASK) {
174 adj.set_value (default_value);
175 cerr << "default value = " << default_value << endl;
186 PixScroller::on_scroll_event (GdkEventScroll* ev)
190 if (ev->state & GDK_CONTROL_MASK) {
191 if (ev->state & GDK_MOD1_MASK) {
200 switch (ev->direction) {
204 adj.set_value (adj.get_value() + (adj.get_page_increment() * scale));
206 case GDK_SCROLL_DOWN:
208 adj.set_value (adj.get_value() - (adj.get_page_increment() * scale));
217 PixScroller::on_motion_notify_event (GdkEventMotion* ev)
224 if (ev->window != grab_window) {
226 grab_window = ev->window;
230 if (ev->state & GDK_CONTROL_MASK) {
231 if (ev->state & GDK_MOD1_MASK) {
240 delta = ev->y - grab_y;
243 fract = (delta / railrect.get_height());
245 fract = min (1.0, fract);
246 fract = max (-1.0, fract);
250 adj.set_value (adj.get_value() + scale * fract * (adj.get_upper() - adj.get_lower()));
257 PixScroller::adjustment_changed ()
259 int y = (int) rint ((overall_height - sliderrect.get_height()) * (adj.get_upper() - adj.get_value()));
261 if (y != sliderrect.get_y()) {