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c801d85f | 1 | ///////////////////////////////////////////////////////////////////////////// |
1e6feb95 | 2 | // Name: src/gtk/scrolbar.cpp |
c801d85f KB |
3 | // Purpose: |
4 | // Author: Robert Roebling | |
f96aa4d9 RR |
5 | // Id: $Id$ |
6 | // Copyright: (c) 1998 Robert Roebling | |
1e6feb95 | 7 | // Licence: wxWindows licence |
c801d85f KB |
8 | ///////////////////////////////////////////////////////////////////////////// |
9 | ||
10 | ||
11 | #ifdef __GNUG__ | |
12 | #pragma implementation "scrolbar.h" | |
13 | #endif | |
14 | ||
1e6feb95 | 15 | #include "wx/defs.h" |
dcf924a3 RR |
16 | |
17 | #if wxUSE_SCROLLBAR | |
18 | ||
1e6feb95 VZ |
19 | #include "wx/scrolbar.h" |
20 | ||
c801d85f | 21 | #include "wx/utils.h" |
aed8ac3f | 22 | |
f5368809 | 23 | #include <math.h> |
c801d85f | 24 | |
aed8ac3f RR |
25 | #include <gdk/gdk.h> |
26 | #include <gtk/gtk.h> | |
83624f79 | 27 | |
acfd422a RR |
28 | //----------------------------------------------------------------------------- |
29 | // idle system | |
30 | //----------------------------------------------------------------------------- | |
31 | ||
32 | extern void wxapp_install_idle_handler(); | |
33 | extern bool g_isIdle; | |
34 | ||
66bd6b93 RR |
35 | //----------------------------------------------------------------------------- |
36 | // data | |
37 | //----------------------------------------------------------------------------- | |
38 | ||
39 | extern bool g_blockEventsOnDrag; | |
76ed8f8d | 40 | extern bool g_blockEventsOnScroll; |
66bd6b93 | 41 | |
aed8ac3f RR |
42 | static const float sensitivity = 0.02; |
43 | ||
c801d85f | 44 | //----------------------------------------------------------------------------- |
b4071e91 | 45 | // "value_changed" |
c801d85f KB |
46 | //----------------------------------------------------------------------------- |
47 | ||
e1811a01 | 48 | static void gtk_scrollbar_callback( GtkAdjustment *adjust, wxScrollBar *win ) |
c801d85f | 49 | { |
acfd422a RR |
50 | if (g_isIdle) wxapp_install_idle_handler(); |
51 | ||
a2053b27 | 52 | if (!win->m_hasVMT) return; |
2d17d68f | 53 | if (g_blockEventsOnDrag) return; |
c801d85f | 54 | |
e1811a01 | 55 | float diff = adjust->value - win->m_oldPos; |
aed8ac3f | 56 | if (fabs(diff) < sensitivity) return; |
e1811a01 RR |
57 | |
58 | win->m_oldPos = adjust->value; | |
59 | ||
60 | GtkRange *range = GTK_RANGE( win->m_widget ); | |
61 | ||
62 | wxEventType command = wxEVT_SCROLL_THUMBTRACK; | |
63 | if (range->scroll_type == GTK_SCROLL_STEP_BACKWARD) command = wxEVT_SCROLL_LINEUP; | |
64 | else if (range->scroll_type == GTK_SCROLL_STEP_FORWARD) command = wxEVT_SCROLL_LINEDOWN; | |
65 | else if (range->scroll_type == GTK_SCROLL_PAGE_BACKWARD) command = wxEVT_SCROLL_PAGEUP; | |
66 | else if (range->scroll_type == GTK_SCROLL_PAGE_FORWARD) command = wxEVT_SCROLL_PAGEDOWN; | |
67 | ||
0a07a7d8 | 68 | double dvalue = adjust->value; |
a9f21e71 | 69 | int value = (int)(dvalue < 0 ? dvalue - 0.5 : dvalue + 0.5); |
c801d85f | 70 | |
f03fc89f | 71 | int orient = win->HasFlag(wxSB_VERTICAL) ? wxVERTICAL : wxHORIZONTAL; |
c801d85f | 72 | |
2d17d68f RR |
73 | wxScrollEvent event( command, win->GetId(), value, orient ); |
74 | event.SetEventObject( win ); | |
75 | win->GetEventHandler()->ProcessEvent( event ); | |
c801d85f KB |
76 | |
77 | /* | |
2d17d68f RR |
78 | wxCommandEvent cevent( wxEVT_COMMAND_SCROLLBAR_UPDATED, win->GetId() ); |
79 | cevent.SetEventObject( win ); | |
80 | win->ProcessEvent( cevent ); | |
c801d85f | 81 | */ |
6de97a3b | 82 | } |
c801d85f | 83 | |
cb43b372 RR |
84 | //----------------------------------------------------------------------------- |
85 | // "button_press_event" from slider | |
86 | //----------------------------------------------------------------------------- | |
87 | ||
2a23d363 RR |
88 | static gint gtk_scrollbar_button_press_callback( GtkRange *widget, |
89 | GdkEventButton *gdk_event, | |
f03fc89f | 90 | wxScrollBar *win ) |
cb43b372 | 91 | { |
acfd422a RR |
92 | if (g_isIdle) wxapp_install_idle_handler(); |
93 | ||
1ecc4d80 | 94 | // g_blockEventsOnScroll = TRUE; doesn't work in DialogEd |
2a23d363 RR |
95 | |
96 | win->m_isScrolling = (gdk_event->window == widget->slider); | |
cb43b372 | 97 | |
acfd422a | 98 | return FALSE; |
cb43b372 RR |
99 | } |
100 | ||
101 | //----------------------------------------------------------------------------- | |
102 | // "button_release_event" from slider | |
103 | //----------------------------------------------------------------------------- | |
104 | ||
76ed8f8d RR |
105 | static gint gtk_scrollbar_button_release_callback( GtkRange *WXUNUSED(widget), |
106 | GdkEventButton *WXUNUSED(gdk_event), | |
f03fc89f | 107 | wxScrollBar *win ) |
cb43b372 | 108 | { |
acfd422a | 109 | if (g_isIdle) wxapp_install_idle_handler(); |
88413fec | 110 | |
1ecc4d80 | 111 | // g_blockEventsOnScroll = FALSE; |
cb43b372 | 112 | |
2a23d363 RR |
113 | if (win->m_isScrolling) |
114 | { | |
7d56fb8f | 115 | wxEventType command = wxEVT_SCROLL_THUMBRELEASE; |
2a23d363 RR |
116 | int value = (int)ceil(win->m_adjust->value); |
117 | int dir = win->HasFlag(wxSB_VERTICAL) ? wxVERTICAL : wxHORIZONTAL; | |
118 | ||
119 | wxScrollEvent event( command, value, dir ); | |
2a23d363 RR |
120 | event.SetEventObject( win ); |
121 | win->GetEventHandler()->ProcessEvent( event ); | |
122 | } | |
76ed8f8d | 123 | |
2a23d363 RR |
124 | win->m_isScrolling = FALSE; |
125 | ||
2d17d68f | 126 | return FALSE; |
cb43b372 RR |
127 | } |
128 | ||
b4071e91 RR |
129 | //----------------------------------------------------------------------------- |
130 | // wxScrollBar | |
131 | //----------------------------------------------------------------------------- | |
132 | ||
c801d85f KB |
133 | IMPLEMENT_DYNAMIC_CLASS(wxScrollBar,wxControl) |
134 | ||
0a07a7d8 | 135 | wxScrollBar::~wxScrollBar() |
c801d85f | 136 | { |
6de97a3b | 137 | } |
c801d85f | 138 | |
debe6624 | 139 | bool wxScrollBar::Create(wxWindow *parent, wxWindowID id, |
c801d85f | 140 | const wxPoint& pos, const wxSize& size, |
6de97a3b | 141 | long style, const wxValidator& validator, const wxString& name ) |
c801d85f | 142 | { |
2d17d68f RR |
143 | m_needParent = TRUE; |
144 | m_acceptsFocus = TRUE; | |
c801d85f | 145 | |
4dcaf11a RR |
146 | if (!PreCreation( parent, pos, size ) || |
147 | !CreateBase( parent, id, pos, size, style, validator, name )) | |
148 | { | |
223d09f6 | 149 | wxFAIL_MSG( wxT("wxScrollBar creation failed") ); |
0a07a7d8 | 150 | return FALSE; |
4dcaf11a | 151 | } |
6de97a3b | 152 | |
2d17d68f | 153 | m_oldPos = 0.0; |
c801d85f | 154 | |
d9bd1494 | 155 | if ((style & wxSB_VERTICAL) == wxSB_VERTICAL) |
2d17d68f | 156 | m_widget = gtk_vscrollbar_new( (GtkAdjustment *) NULL ); |
d9bd1494 SB |
157 | else |
158 | m_widget = gtk_hscrollbar_new( (GtkAdjustment *) NULL ); | |
159 | ||
2d17d68f | 160 | m_adjust = gtk_range_get_adjustment( GTK_RANGE(m_widget) ); |
c801d85f | 161 | |
2d17d68f RR |
162 | gtk_signal_connect( GTK_OBJECT(m_adjust), |
163 | "value_changed", | |
f03fc89f VZ |
164 | (GtkSignalFunc) gtk_scrollbar_callback, |
165 | (gpointer) this ); | |
c801d85f | 166 | |
2d17d68f RR |
167 | gtk_signal_connect( GTK_OBJECT(m_widget), |
168 | "button_press_event", | |
169 | (GtkSignalFunc)gtk_scrollbar_button_press_callback, | |
f03fc89f | 170 | (gpointer) this ); |
cb43b372 | 171 | |
2d17d68f RR |
172 | gtk_signal_connect( GTK_OBJECT(m_widget), |
173 | "button_release_event", | |
174 | (GtkSignalFunc)gtk_scrollbar_button_release_callback, | |
f03fc89f | 175 | (gpointer) this ); |
cb43b372 | 176 | |
f03fc89f | 177 | m_parent->DoAddChild( this ); |
6ca41e57 | 178 | |
2d17d68f | 179 | PostCreation(); |
c801d85f | 180 | |
2d17d68f | 181 | SetBackgroundColour( parent->GetBackgroundColour() ); |
f96aa4d9 | 182 | |
2d17d68f | 183 | Show( TRUE ); |
c801d85f | 184 | |
2d17d68f | 185 | return TRUE; |
6de97a3b | 186 | } |
c801d85f | 187 | |
0a07a7d8 | 188 | int wxScrollBar::GetThumbPosition() const |
c801d85f | 189 | { |
0a07a7d8 | 190 | double val = m_adjust->value; |
a9f21e71 | 191 | return (int)(val < 0 ? val - 0.5 : val + 0.5); |
6de97a3b | 192 | } |
c801d85f KB |
193 | |
194 | int wxScrollBar::GetThumbSize() const | |
195 | { | |
2d17d68f | 196 | return (int)(m_adjust->page_size+0.5); |
6de97a3b | 197 | } |
c801d85f KB |
198 | |
199 | int wxScrollBar::GetPageSize() const | |
200 | { | |
2d17d68f | 201 | return (int)(m_adjust->page_increment+0.5); |
6de97a3b | 202 | } |
c801d85f KB |
203 | |
204 | int wxScrollBar::GetRange() const | |
205 | { | |
2d17d68f | 206 | return (int)(m_adjust->upper+0.5); |
6de97a3b | 207 | } |
c801d85f | 208 | |
4fabb575 | 209 | void wxScrollBar::SetThumbPosition( int viewStart ) |
c801d85f | 210 | { |
2d17d68f | 211 | if (m_isScrolling) return; |
76ed8f8d | 212 | |
2d17d68f RR |
213 | float fpos = (float)viewStart; |
214 | m_oldPos = fpos; | |
215 | if (fabs(fpos-m_adjust->value) < 0.2) return; | |
216 | m_adjust->value = fpos; | |
76ed8f8d | 217 | |
2a23d363 RR |
218 | gtk_signal_disconnect_by_func( GTK_OBJECT(m_adjust), |
219 | (GtkSignalFunc) gtk_scrollbar_callback, | |
220 | (gpointer) this ); | |
221 | ||
2d17d68f | 222 | gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "value_changed" ); |
2a23d363 RR |
223 | |
224 | gtk_signal_connect( GTK_OBJECT(m_adjust), | |
225 | "value_changed", | |
226 | (GtkSignalFunc) gtk_scrollbar_callback, | |
227 | (gpointer) this ); | |
6de97a3b | 228 | } |
c801d85f | 229 | |
debe6624 JS |
230 | void wxScrollBar::SetScrollbar( int position, int thumbSize, int range, int pageSize, |
231 | bool WXUNUSED(refresh) ) | |
c801d85f | 232 | { |
2d17d68f RR |
233 | float fpos = (float)position; |
234 | float frange = (float)range; | |
235 | float fthumb = (float)thumbSize; | |
236 | float fpage = (float)pageSize; | |
c801d85f | 237 | |
2d17d68f RR |
238 | if ((fabs(frange-m_adjust->upper) < 0.2) && |
239 | (fabs(fthumb-m_adjust->page_size) < 0.2) && | |
240 | (fabs(fpage-m_adjust->page_increment) < 0.2)) | |
241 | { | |
242 | SetThumbPosition( position ); | |
243 | return; | |
244 | } | |
84efdbf1 | 245 | |
2d17d68f | 246 | m_oldPos = fpos; |
cb43b372 | 247 | |
2d17d68f RR |
248 | m_adjust->lower = 0.0; |
249 | m_adjust->upper = frange; | |
250 | m_adjust->value = fpos; | |
251 | m_adjust->step_increment = 1.0; | |
252 | m_adjust->page_increment = (float)(wxMax(fpage,0)); | |
253 | m_adjust->page_size = fthumb; | |
254 | ||
255 | gtk_signal_emit_by_name( GTK_OBJECT(m_adjust), "changed" ); | |
6de97a3b | 256 | } |
c801d85f | 257 | |
2d17d68f | 258 | /* Backward compatibility */ |
0a07a7d8 | 259 | int wxScrollBar::GetValue() const |
c801d85f | 260 | { |
2d17d68f | 261 | return GetThumbPosition(); |
6de97a3b | 262 | } |
c801d85f | 263 | |
debe6624 | 264 | void wxScrollBar::SetValue( int viewStart ) |
c801d85f | 265 | { |
2d17d68f | 266 | SetThumbPosition( viewStart ); |
6de97a3b | 267 | } |
c801d85f KB |
268 | |
269 | void wxScrollBar::GetValues( int *viewStart, int *viewLength, int *objectLength, int *pageLength ) const | |
270 | { | |
2d17d68f RR |
271 | int pos = (int)(m_adjust->value+0.5); |
272 | int thumb = (int)(m_adjust->page_size+0.5); | |
273 | int page = (int)(m_adjust->page_increment+0.5); | |
274 | int range = (int)(m_adjust->upper+0.5); | |
c801d85f | 275 | |
2d17d68f RR |
276 | *viewStart = pos; |
277 | *viewLength = range; | |
278 | *objectLength = thumb; | |
279 | *pageLength = page; | |
6de97a3b | 280 | } |
c801d85f KB |
281 | |
282 | int wxScrollBar::GetViewLength() const | |
283 | { | |
2d17d68f | 284 | return (int)(m_adjust->upper+0.5); |
6de97a3b | 285 | } |
c801d85f KB |
286 | |
287 | int wxScrollBar::GetObjectLength() const | |
288 | { | |
2d17d68f | 289 | return (int)(m_adjust->page_size+0.5); |
6de97a3b | 290 | } |
c801d85f | 291 | |
debe6624 | 292 | void wxScrollBar::SetPageSize( int pageLength ) |
c801d85f | 293 | { |
2d17d68f RR |
294 | int pos = (int)(m_adjust->value+0.5); |
295 | int thumb = (int)(m_adjust->page_size+0.5); | |
296 | int range = (int)(m_adjust->upper+0.5); | |
297 | SetScrollbar( pos, thumb, range, pageLength ); | |
6de97a3b | 298 | } |
c801d85f | 299 | |
debe6624 | 300 | void wxScrollBar::SetObjectLength( int objectLength ) |
c801d85f | 301 | { |
2d17d68f RR |
302 | int pos = (int)(m_adjust->value+0.5); |
303 | int page = (int)(m_adjust->page_increment+0.5); | |
304 | int range = (int)(m_adjust->upper+0.5); | |
305 | SetScrollbar( pos, objectLength, range, page ); | |
6de97a3b | 306 | } |
c801d85f | 307 | |
debe6624 | 308 | void wxScrollBar::SetViewLength( int viewLength ) |
c801d85f | 309 | { |
2d17d68f RR |
310 | int pos = (int)(m_adjust->value+0.5); |
311 | int thumb = (int)(m_adjust->page_size+0.5); | |
312 | int page = (int)(m_adjust->page_increment+0.5); | |
313 | SetScrollbar( pos, thumb, viewLength, page ); | |
6de97a3b | 314 | } |
c801d85f | 315 | |
b4071e91 RR |
316 | bool wxScrollBar::IsOwnGtkWindow( GdkWindow *window ) |
317 | { | |
2d17d68f RR |
318 | GtkRange *range = GTK_RANGE(m_widget); |
319 | return ( (window == GTK_WIDGET(range)->window) || | |
320 | (window == range->trough) || | |
f03fc89f VZ |
321 | (window == range->slider) || |
322 | (window == range->step_forw) || | |
323 | (window == range->step_back) ); | |
b4071e91 | 324 | } |
58614078 RR |
325 | |
326 | void wxScrollBar::ApplyWidgetStyle() | |
327 | { | |
2d17d68f RR |
328 | SetWidgetStyle(); |
329 | gtk_widget_set_style( m_widget, m_widgetStyle ); | |
58614078 RR |
330 | } |
331 | ||
dcf924a3 | 332 | #endif |