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"
27 #include "gtkmm2ext/keyboard.h"
31 using namespace Gtkmm2ext;
33 PixScroller::PixScroller (Adjustment& a,
34 Glib::RefPtr<Gdk::Pixbuf> s,
35 Glib::RefPtr<Gdk::Pixbuf> r)
41 add_events (Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK|Gdk::POINTER_MOTION_MASK|Gdk::SCROLL_MASK);
43 adj.signal_value_changed().connect (mem_fun (*this, &PixScroller::adjustment_changed));
44 default_value = adj.get_value();
46 sliderrect.set_width(slider->get_width());
47 sliderrect.set_height(slider->get_height());
48 railrect.set_width(rail->get_width());
49 railrect.set_height(rail->get_height());
51 railrect.set_y(sliderrect.get_height() / 2);
54 overall_height = railrect.get_height() + sliderrect.get_height();
56 sliderrect.set_y((int) rint ((overall_height - sliderrect.get_height()) * (adj.get_upper() - adj.get_value())));
57 railrect.set_x((sliderrect.get_width() / 2) - 2);
61 PixScroller::on_size_request (GtkRequisition* requisition)
63 requisition->width = sliderrect.get_width();
64 requisition->height = overall_height;
68 PixScroller::on_expose_event (GdkEventExpose* ev)
70 GdkRectangle intersect;
71 Glib::RefPtr<Gdk::Window> win (get_window());
73 win->draw_rectangle (get_style()->get_bg_gc(get_state()), TRUE,
79 if (gdk_rectangle_intersect (railrect.gobj(), &ev->area, &intersect)) {
80 Glib::RefPtr<Gdk::GC> gc(get_style()->get_bg_gc(get_state()));
81 win->draw_pixbuf (gc, rail,
82 intersect.x - railrect.get_x(),
83 intersect.y - railrect.get_y(),
88 Gdk::RGB_DITHER_NONE, 0, 0);
91 if (gdk_rectangle_intersect (sliderrect.gobj(), &ev->area, &intersect)) {
92 Glib::RefPtr<Gdk::GC> gc(get_style()->get_fg_gc(get_state()));
93 // Glib::RefPtr<Gdk::Bitmap> mask (slider_mask);
96 gdk_gc_get_values(gc->gobj(), &values);
97 gc->set_clip_origin (sliderrect.get_x(), sliderrect.get_y());
98 // gc->set_clip_mask (mask);
99 win->draw_pixbuf (gc, slider,
100 intersect.x - sliderrect.get_x(),
101 intersect.y - sliderrect.get_y(),
106 Gdk::RGB_DITHER_NONE, 0, 0);
107 gc->set_clip_origin (values.clip_x_origin, values.clip_y_origin);
108 // gdk_gc_set_clip_mask (gc->gobj(), values.clip_mask);
116 PixScroller::on_button_press_event (GdkEventButton* ev)
118 switch (ev->button) {
120 if (!(ev->state & Keyboard::TertiaryModifier)) {
124 grab_window = ev->window;
137 PixScroller::on_button_release_event (GdkEventButton* ev)
141 if (ev->state & Keyboard::PrimaryModifier) {
142 if (ev->state & Keyboard::SecondaryModifier) {
151 switch (ev->button) {
157 if (ev->y == grab_start) {
158 /* no motion - just a click */
161 if (ev->y < sliderrect.get_height()/2) {
165 fract = 1.0 - (ev->y - sliderrect.get_height()/2) / railrect.get_height();
168 fract = min (1.0, fract);
169 fract = max (0.0, fract);
171 adj.set_value (scale * fract * (adj.get_upper() - adj.get_lower()));
174 if (ev->state & Keyboard::TertiaryModifier) {
175 adj.set_value (default_value);
176 cerr << "default value = " << default_value << endl;
187 PixScroller::on_scroll_event (GdkEventScroll* ev)
191 if (ev->state & Keyboard::PrimaryModifier) {
192 if (ev->state & Keyboard::SecondaryModifier) {
201 switch (ev->direction) {
205 adj.set_value (adj.get_value() + (adj.get_page_increment() * scale));
207 case GDK_SCROLL_DOWN:
209 adj.set_value (adj.get_value() - (adj.get_page_increment() * scale));
218 PixScroller::on_motion_notify_event (GdkEventMotion* ev)
225 if (ev->window != grab_window) {
227 grab_window = ev->window;
231 if (ev->state & Keyboard::PrimaryModifier) {
232 if (ev->state & Keyboard::SecondaryModifier) {
241 delta = ev->y - grab_y;
244 fract = (delta / railrect.get_height());
246 fract = min (1.0, fract);
247 fract = max (-1.0, fract);
251 adj.set_value (adj.get_value() + scale * fract * (adj.get_upper() - adj.get_lower()));
258 PixScroller::adjustment_changed ()
260 int y = (int) rint ((overall_height - sliderrect.get_height()) * (adj.get_upper() - adj.get_value()));
262 if (y != sliderrect.get_y()) {