1 |
/* |
2 |
* Copyright (C) 2006, 2007 Andreas Persson |
3 |
* |
4 |
* This program is free software; you can redistribute it and/or |
5 |
* modify it under the terms of the GNU General Public License as |
6 |
* published by the Free Software Foundation; either version 2, or (at |
7 |
* your option) any later version. |
8 |
* |
9 |
* This program is distributed in the hope that it will be useful, but |
10 |
* WITHOUT ANY WARRANTY; without even the implied warranty of |
11 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 |
* General Public License for more details. |
13 |
* |
14 |
* You should have received a copy of the GNU General Public License |
15 |
* along with program; see the file COPYING. If not, write to the Free |
16 |
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA |
17 |
* 02110-1301 USA. |
18 |
*/ |
19 |
|
20 |
#include "regionchooser.h" |
21 |
#include <gdkmm/cursor.h> |
22 |
|
23 |
RegionChooser::RegionChooser() |
24 |
{ |
25 |
Glib::RefPtr<Gdk::Colormap> colormap = get_default_colormap(); |
26 |
|
27 |
black = Gdk::Color("black"); |
28 |
white = Gdk::Color("white"); |
29 |
red = Gdk::Color("#8070ff"); |
30 |
blue = Gdk::Color("#c098ff"); |
31 |
green = Gdk::Color("#a088ff"); |
32 |
grey1 = Gdk::Color("red"); |
33 |
|
34 |
colormap->alloc_color(black); |
35 |
colormap->alloc_color(white); |
36 |
colormap->alloc_color(red); |
37 |
colormap->alloc_color(blue); |
38 |
colormap->alloc_color(green); |
39 |
colormap->alloc_color(grey1); |
40 |
instrument = 0; |
41 |
region = 0; |
42 |
resize.active = false; |
43 |
cursor_is_resize = false; |
44 |
h1 = 20; |
45 |
width = 800; |
46 |
|
47 |
add_events(Gdk::BUTTON_PRESS_MASK | Gdk::POINTER_MOTION_MASK | |
48 |
Gdk::POINTER_MOTION_HINT_MASK); |
49 |
} |
50 |
|
51 |
RegionChooser::~RegionChooser() |
52 |
{ |
53 |
} |
54 |
|
55 |
void RegionChooser::on_realize() |
56 |
{ |
57 |
// We need to call the base on_realize() |
58 |
Gtk::DrawingArea::on_realize(); |
59 |
|
60 |
// Now we can allocate any additional resources we need |
61 |
Glib::RefPtr<Gdk::Window> window = get_window(); |
62 |
gc = Gdk::GC::create(window); |
63 |
window->clear(); |
64 |
} |
65 |
|
66 |
bool RegionChooser::on_expose_event(GdkEventExpose* event) |
67 |
{ |
68 |
Glib::RefPtr<Gdk::Window> window = get_window(); |
69 |
window->clear(); |
70 |
const int h = 40; |
71 |
const int w = width - 1; |
72 |
const int bh = int(h * 0.55); |
73 |
|
74 |
Glib::RefPtr<const Gdk::GC> black = get_style()->get_black_gc(); |
75 |
Glib::RefPtr<const Gdk::GC> white = get_style()->get_white_gc(); |
76 |
|
77 |
window->draw_rectangle(black, false, 0, h1, w, h - 1); |
78 |
window->draw_rectangle(white, true, 1, h1 + 1, w - 1, h - 2); |
79 |
for (int i = 0 ; i < 128 ; i++) { |
80 |
int note = (i + 3) % 12; |
81 |
int x = int(w * i / 128.0 + 0.5); |
82 |
|
83 |
if (note == 1 || note == 4 || note == 6 || note == 9 || note == 11) { |
84 |
int x2 = int(w * (i + 0.5) / 128.0 + 0.5); |
85 |
window->draw_line(black, x2, h1 + bh, x2, h1 + h); |
86 |
|
87 |
int x3 = int(w * (i + 1) / 128.0 + 0.5); |
88 |
window->draw_rectangle(black, true, x, h1 + 1, x3 - x + 1, bh); |
89 |
} else if (note == 3 || note == 8) { |
90 |
window->draw_line(black, x, h1 + 1, x, h1 + h); |
91 |
} |
92 |
} |
93 |
|
94 |
if (instrument) { |
95 |
int i = 0; |
96 |
gig::Region *nextRegion; |
97 |
int x3 = -1; |
98 |
for (gig::Region *r = instrument->GetFirstRegion() ; |
99 |
r ; |
100 |
r = nextRegion) { |
101 |
|
102 |
if (x3 < 0) x3 = int(w * (r->KeyRange.low) / 128.0 + 0.5); |
103 |
nextRegion = instrument->GetNextRegion(); |
104 |
if (!nextRegion || r->KeyRange.high + 1 != nextRegion->KeyRange.low) { |
105 |
int x2 = int(w * (r->KeyRange.high + 1) / 128.0 + 0.5); |
106 |
window->draw_line(black, x3, 0, x2, 0); |
107 |
window->draw_line(black, x3, h1 - 1, x2, h1 - 1); |
108 |
window->draw_line(black, x2, 1, x2, h1 - 2); |
109 |
window->draw_rectangle(white, true, x3 + 1, 1, x2 - x3 - 1, h1 - 2); |
110 |
x3 = -1; |
111 |
} |
112 |
i++; |
113 |
} |
114 |
|
115 |
for (gig::Region *r = instrument->GetFirstRegion() ; |
116 |
r ; |
117 |
r = instrument->GetNextRegion()) { |
118 |
int x = int(w * (r->KeyRange.low) / 128.0 + 0.5); |
119 |
window->draw_line(black, x, 1, x, h1 - 2); |
120 |
} |
121 |
|
122 |
if (region) { |
123 |
int x1 = int(w * (region->KeyRange.low) / 128.0 + 0.5); |
124 |
int x2 = int(w * (region->KeyRange.high + 1) / 128.0 + 0.5); |
125 |
gc->set_foreground(red); |
126 |
window->draw_rectangle(gc, true, x1 + 1, 1, x2 - x1 - 1, h1 - 2); |
127 |
} |
128 |
} |
129 |
return true; |
130 |
} |
131 |
|
132 |
|
133 |
void RegionChooser::on_size_request(GtkRequisition* requisition) |
134 |
{ |
135 |
*requisition = GtkRequisition(); |
136 |
requisition->height = 40 + 20; |
137 |
requisition->width = 500; |
138 |
} |
139 |
|
140 |
|
141 |
// not used |
142 |
void RegionChooser::draw_region(int from, int to, const Gdk::Color& color) |
143 |
{ |
144 |
const int h = 40; |
145 |
const int w = width; |
146 |
const int bh = int(h * 0.55); |
147 |
|
148 |
Glib::RefPtr<Gdk::Window> window = get_window(); |
149 |
gc->set_foreground(color); |
150 |
|
151 |
for (int i = from ; i < to ; i++) { |
152 |
int note = (i + 3) % 12; |
153 |
int x = int(w * i / 128.0 + 0.5) + 1; |
154 |
int x2 = int(w * (i + 1.5) / 128.0 + 0.5); |
155 |
int x3 = int(w * (i + 1) / 128.0 + 0.5); |
156 |
int x4 = int(w * (i - 0.5) / 128 + 0.5) + 1; |
157 |
int w1 = x3 - x; |
158 |
switch (note) { |
159 |
case 0: case 5: case 10: |
160 |
window->draw_rectangle(gc, true, x, h1 + 1, w1, bh); |
161 |
window->draw_rectangle(gc, true, x4, h1 + bh + 1, x2 - x4, h - bh - 2); |
162 |
break; |
163 |
case 2: case 7: |
164 |
window->draw_rectangle(gc, true, x, h1 + 1, w1, bh); |
165 |
window->draw_rectangle(gc, true, x4, h1 + bh + 1, x3 - x4, h - bh - 2); |
166 |
break; |
167 |
case 3: case 8: |
168 |
window->draw_rectangle(gc, true, x, h1 + 1, w1, bh); |
169 |
window->draw_rectangle(gc, true, x, h1 + bh + 1, x2 - x, h - bh - 2); |
170 |
break; |
171 |
default: |
172 |
window->draw_rectangle(gc, true, x, h1 + 1, w1, bh - 1); |
173 |
break; |
174 |
} |
175 |
} |
176 |
} |
177 |
|
178 |
void RegionChooser::set_instrument(gig::Instrument* instrument) |
179 |
{ |
180 |
this->instrument = instrument; |
181 |
region = instrument->GetFirstRegion(); |
182 |
queue_draw(); |
183 |
sel_changed_signal.emit(); |
184 |
} |
185 |
|
186 |
void RegionChooser::set_region(gig::Region* region) |
187 |
{ |
188 |
this->region = region; |
189 |
queue_draw(); |
190 |
} |
191 |
|
192 |
bool RegionChooser::on_button_release_event(GdkEventButton* event) |
193 |
{ |
194 |
if (resize.active) { |
195 |
get_window()->pointer_ungrab(event->time); |
196 |
resize.active = false; |
197 |
|
198 |
if (resize.mode == resize.moving_high_limit) { |
199 |
resize.region->KeyRange.high = resize.pos - 1; |
200 |
} else if (resize.mode == resize.moving_low_limit) { |
201 |
resize.region->KeyRange.low = resize.pos; |
202 |
} |
203 |
|
204 |
if (!is_in_resize_zone(event->x, event->y) && cursor_is_resize) { |
205 |
get_window()->set_cursor(); |
206 |
cursor_is_resize = false; |
207 |
} |
208 |
} |
209 |
return true; |
210 |
} |
211 |
|
212 |
bool RegionChooser::on_button_press_event(GdkEventButton* event) |
213 |
{ |
214 |
if (instrument) { |
215 |
if (is_in_resize_zone(event->x, event->y)) { |
216 |
Gdk::Cursor double_arrow(Gdk::SB_H_DOUBLE_ARROW); |
217 |
get_window()->pointer_grab(false, |
218 |
Gdk::BUTTON_RELEASE_MASK | |
219 |
Gdk::POINTER_MOTION_MASK | |
220 |
Gdk::POINTER_MOTION_HINT_MASK, |
221 |
double_arrow, event->time); |
222 |
resize.active = true; |
223 |
} else { |
224 |
const int w = width - 1; |
225 |
int i = 0; |
226 |
for (gig::Region *r = instrument->GetFirstRegion() ; r ; |
227 |
r = instrument->GetNextRegion()) { |
228 |
|
229 |
int x = int(w * (r->KeyRange.low) / 128.0 + 0.5); |
230 |
int x2 = int(w * (r->KeyRange.high + 1) / 128.0 + 0.5); |
231 |
if (event->x >= x && event->x < x2) { |
232 |
region = r; |
233 |
break; |
234 |
} |
235 |
i++; |
236 |
} |
237 |
queue_draw(); |
238 |
sel_changed_signal.emit(); |
239 |
} |
240 |
} |
241 |
} |
242 |
|
243 |
bool RegionChooser::on_motion_notify_event(GdkEventMotion* event) |
244 |
{ |
245 |
const int w = width - 1; |
246 |
Glib::RefPtr<Gdk::Window> window = get_window(); |
247 |
int x, y; |
248 |
Gdk::ModifierType state = Gdk::ModifierType(0); |
249 |
window->get_pointer(x, y, state); |
250 |
if (resize.active) { |
251 |
int k = int(double(x) / w * 128.0 + 0.5); |
252 |
|
253 |
if (k < resize.min) k = resize.min; |
254 |
else if (k > resize.max) k = resize.max; |
255 |
|
256 |
if (k != resize.pos) { |
257 |
if (resize.mode == resize.undecided) { |
258 |
if (k < resize.pos) { |
259 |
// edit high limit of prev_region |
260 |
resize.max = resize.region->KeyRange.low; |
261 |
resize.region = resize.prev_region; |
262 |
resize.mode = resize.moving_high_limit; |
263 |
} else { |
264 |
// edit low limit of region |
265 |
resize.min = resize.prev_region->KeyRange.high + 1; |
266 |
resize.mode = resize.moving_low_limit; |
267 |
} |
268 |
} |
269 |
Glib::RefPtr<const Gdk::GC> black = get_style()->get_black_gc(); |
270 |
Glib::RefPtr<const Gdk::GC> white = get_style()->get_white_gc(); |
271 |
if (region == resize.region) { |
272 |
gc->set_foreground(red); |
273 |
white = gc; |
274 |
} |
275 |
Glib::RefPtr<const Gdk::GC> bg = get_style()->get_bg_gc(Gtk::STATE_NORMAL); |
276 |
int prevx = int(w * resize.pos / 128.0 + 0.5); |
277 |
x = int(w * k / 128.0 + 0.5); |
278 |
|
279 |
if (resize.mode == resize.moving_high_limit) { |
280 |
if (k > resize.pos) { |
281 |
window->draw_rectangle(white, true, prevx, 1, x - prevx, h1 - 2); |
282 |
window->draw_line(black, prevx, 0, x, 0); |
283 |
window->draw_line(black, prevx, h1 - 1, x, h1 - 1); |
284 |
} else { |
285 |
int xx = ((resize.pos == resize.max && resize.max != 128) ? 1 : 0); |
286 |
window->draw_rectangle(bg, true, x + 1, 0, prevx - x - xx, h1); |
287 |
} |
288 |
} else { |
289 |
if (k < resize.pos) { |
290 |
window->draw_rectangle(white, true, x + 1, 1, prevx - x, h1 - 2); |
291 |
window->draw_line(black, x, 0, prevx, 0); |
292 |
window->draw_line(black, x, h1 - 1, prevx, h1 - 1); |
293 |
} else { |
294 |
int xx = ((resize.pos == resize.min && resize.min != 0) ? 1 : 0); |
295 |
window->draw_rectangle(bg, true, prevx + xx, 0, x - prevx - xx, h1); |
296 |
} |
297 |
} |
298 |
window->draw_line(black, x, 1, x, h1 - 2); |
299 |
resize.pos = k; |
300 |
} |
301 |
} else { |
302 |
if (is_in_resize_zone(x, y)) { |
303 |
if (!cursor_is_resize) { |
304 |
Gdk::Cursor double_arrow(Gdk::SB_H_DOUBLE_ARROW); |
305 |
window->set_cursor(double_arrow); |
306 |
cursor_is_resize = true; |
307 |
} |
308 |
} else if (cursor_is_resize) { |
309 |
window->set_cursor(); |
310 |
cursor_is_resize = false; |
311 |
} |
312 |
} |
313 |
|
314 |
return true; |
315 |
} |
316 |
|
317 |
bool RegionChooser::is_in_resize_zone(double x, double y) { |
318 |
const int w = width - 1; |
319 |
|
320 |
if (instrument && y >= 0 && y <= h1) { |
321 |
gig::Region* prev_region = 0; |
322 |
gig::Region* next_region; |
323 |
for (gig::Region* r = instrument->GetFirstRegion() ; r ; r = next_region) { |
324 |
next_region = instrument->GetNextRegion(); |
325 |
|
326 |
int lo = int(w * (r->KeyRange.low) / 128.0 + 0.5); |
327 |
if (x <= lo - 2) break; |
328 |
if (x < lo + 2) { |
329 |
resize.region = r; |
330 |
resize.pos = r->KeyRange.low; |
331 |
resize.max = r->KeyRange.high; |
332 |
|
333 |
if (prev_region && prev_region->KeyRange.high + 1 == r->KeyRange.low) { |
334 |
// we don't know yet if it's the high limit of |
335 |
// prev_region or the low limit of r that's going |
336 |
// to be edited |
337 |
resize.mode = resize.undecided; |
338 |
resize.min = prev_region->KeyRange.low + 1; |
339 |
resize.prev_region = prev_region; |
340 |
return true; |
341 |
} |
342 |
|
343 |
// edit low limit |
344 |
resize.mode = resize.moving_low_limit; |
345 |
resize.min = prev_region ? prev_region->KeyRange.high + 1 : 0; |
346 |
return true; |
347 |
} |
348 |
if (!next_region || r->KeyRange.high + 1 != next_region->KeyRange.low) { |
349 |
int hi = int(w * (r->KeyRange.high + 1) / 128.0 + 0.5); |
350 |
if (x <= hi - 2) break; |
351 |
if (x < hi + 2) { |
352 |
// edit high limit |
353 |
resize.region = r; |
354 |
resize.pos = r->KeyRange.high + 1; |
355 |
resize.mode = resize.moving_high_limit; |
356 |
resize.min = r->KeyRange.low + 1; |
357 |
resize.max = next_region ? next_region->KeyRange.low : 128; |
358 |
return true; |
359 |
} |
360 |
} |
361 |
prev_region = r; |
362 |
} |
363 |
} |
364 |
return false; |
365 |
} |
366 |
|
367 |
sigc::signal<void> RegionChooser::signal_sel_changed() |
368 |
{ |
369 |
return sel_changed_signal; |
370 |
} |