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1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/cocoa/slider.mm
3 // Purpose: wxSlider
4 // Author: David Elliott
5 // Mark Oxenham
6 // Modified by:
7 // Created: 2003/06/19
8 // RCS-ID: $Id$
9 // Copyright: (c) 2003 David Elliott
10 // (c) 2007 Software 2000 Ltd.
11 // Licence: wxWindows licence
12 /////////////////////////////////////////////////////////////////////////////
13
14 #include "wx/wxprec.h"
15
16 #if wxUSE_SLIDER
17
18 #include "wx/slider.h"
19
20 #ifndef WX_PRECOMP
21 #include "wx/app.h"
22 #endif //WX_PRECOMP
23
24 #import <Foundation/NSString.h>
25 #include "wx/cocoa/objc/NSSlider.h"
26 #import <AppKit/NSEvent.h>
27 #import <AppKit/NSWindow.h>
28
29 BEGIN_EVENT_TABLE(wxSlider, wxSliderBase)
30 END_EVENT_TABLE()
31 WX_IMPLEMENT_COCOA_OWNER(wxSlider,NSSlider,NSControl,NSView)
32
33
34 inline void AdjustDimension(
35 bool isTicksStyle,
36 int &pos,
37 wxSize &size,
38 int (wxSize::*GetDimension)() const,
39 void (wxSize::*SetDimension)(int))
40 {
41 const int dimension = (size.*GetDimension)();
42 const int minSize = (isTicksStyle) ? 23 : 20;
43
44 // prevent clipping of overly "thin" sliders
45 if (dimension < minSize)
46 {
47 (size.*SetDimension)(minSize);
48 }
49
50 // move the slider control to the middle of the dimension that is not
51 // being used to define its length
52 pos += (dimension - (size.*GetDimension)() + 1) / 2;
53 }
54
55 bool wxSlider::Create(wxWindow *parent, wxWindowID winid,
56 int value, int minValue, int maxValue,
57 const wxPoint& pos, const wxSize& size, long style,
58 const wxValidator& validator, const wxString& name)
59 {
60 wxSize adjustedSize(size);
61 wxPoint adjustedPos(pos);
62 const bool isTicksStyle = (style & wxSL_TICKS) != 0;
63
64 if ((style & wxSL_HORIZONTAL) && (size.GetHeight() != wxDefaultCoord))
65 {
66 AdjustDimension(isTicksStyle, adjustedPos.y, adjustedSize, &wxSize::GetHeight, &wxSize::SetHeight);
67 }
68 else if ((style & wxSL_VERTICAL) && (size.GetWidth() != wxDefaultCoord))
69 {
70 AdjustDimension(isTicksStyle, adjustedPos.x, adjustedSize, &wxSize::GetWidth, &wxSize::SetWidth);
71 }
72
73 if(!CreateControl(parent,winid,adjustedPos,adjustedSize,style,validator,name))
74 return false;
75 SetNSSlider([[WX_GET_OBJC_CLASS(WXNSSlider) alloc] initWithFrame: MakeDefaultNSRect(adjustedSize)]);
76 [m_cocoaNSView release];
77
78 if(m_parent)
79 m_parent->CocoaAddChild(this);
80 SetInitialFrameRect(adjustedPos,adjustedSize);
81
82 SetRange(minValue, maxValue);
83 SetValue(value);
84
85 // -1 default for wxSL_AUTOTICKS == false
86 int tickMarks = -1;
87 // minValue > maxValue not handled, tickMarks set to 0
88 if ( style & wxSL_AUTOTICKS )
89 tickMarks = ((maxValue - minValue >= 0) ? (maxValue - minValue) : 0);
90 SetTickFreq(tickMarks);
91
92 return true;
93 }
94
95 wxSlider::~wxSlider()
96 {
97 DisassociateNSSlider(GetNSSlider());
98 }
99
100 void wxSlider::AssociateNSSlider(WX_NSSlider theSlider)
101 {
102 wxCocoaNSSlider::AssociateNSSlider(theSlider);
103 // Set the target/action.. we don't really need to unset these
104 [theSlider setTarget:wxCocoaNSControl::sm_cocoaTarget];
105 [theSlider setAction:@selector(wxNSControlAction:)];
106 }
107
108 void wxSlider::ProcessEventType(wxEventType commandType)
109 {
110 wxScrollEvent event(commandType, GetId(), GetValue(), HasFlag(wxSL_VERTICAL)?wxVERTICAL:wxHORIZONTAL);
111 event.SetEventObject(this);
112 HandleWindowEvent(event);
113 }
114
115 static inline wxEventType wxSliderEventTypeForKeyFromEvent(NSEvent *theEvent)
116 {
117 NSString *theEventCharacters = [theEvent charactersIgnoringModifiers];
118
119 if ([theEventCharacters length] == 1)
120 {
121 switch ([theEventCharacters characterAtIndex:0])
122 {
123 case NSUpArrowFunctionKey:
124 case NSRightArrowFunctionKey: return wxEVT_SCROLL_PAGEDOWN;
125 case NSDownArrowFunctionKey:
126 case NSLeftArrowFunctionKey: return wxEVT_SCROLL_PAGEUP;
127 case NSPageUpFunctionKey: return wxEVT_SCROLL_BOTTOM;
128 case NSPageDownFunctionKey: return wxEVT_SCROLL_TOP;
129 }
130 }
131 // Overload wxEVT_ANY to mean we can't determine the event type.
132 return wxEVT_ANY;
133 }
134
135 void wxSlider::CocoaTarget_action()
136 {
137 wxEventType sliderEventType;
138 SEL theSelector = wxCocoaNSSlider::GetLastResponderSelector();
139
140 if( theSelector == @selector(moveUp:)
141 || theSelector == @selector(moveRight:))
142 sliderEventType = wxEVT_SCROLL_PAGEDOWN;
143 else if( theSelector == @selector(moveDown:)
144 || theSelector == @selector(moveLeft:))
145 sliderEventType = wxEVT_SCROLL_PAGEUP;
146 else if( theSelector == @selector(pageUp:))
147 sliderEventType = wxEVT_SCROLL_BOTTOM;
148 else if( theSelector == @selector(pageDown:))
149 sliderEventType = wxEVT_SCROLL_TOP;
150 else if( theSelector == @selector(keyDown:))
151 // This case should ideally never be reached.
152 sliderEventType = wxSliderEventTypeForKeyFromEvent([[GetNSSlider() window] currentEvent]);
153 else
154 // Don't generate an event.
155 return;
156 if(sliderEventType != wxEVT_ANY)
157 ProcessEventType(sliderEventType);
158 }
159
160 void wxSlider::CocoaNotification_startTracking(WX_NSNotification notification)
161 {
162 CocoaNotification_continueTracking(notification);
163 }
164
165 void wxSlider::CocoaNotification_continueTracking(WX_NSNotification notification)
166 {
167 const double realValue = [GetNSSlider() doubleValue];
168
169 if (realValue != [GetNSSlider() intValue])
170 {
171 SetValue(rint(realValue));
172 }
173
174 ProcessEventType(wxEVT_SCROLL_THUMBTRACK);
175 }
176
177 void wxSlider::CocoaNotification_stopTracking(WX_NSNotification notification)
178 {
179 ProcessEventType(wxEVT_SCROLL_THUMBRELEASE);
180 }
181
182 int wxSlider::GetValue() const
183 {
184 return [GetNSSlider() intValue];
185 }
186
187 void wxSlider::SetValue(int value)
188 {
189 [GetNSSlider() setIntValue:value];
190 }
191
192 void wxSlider::SetRange(int minValue, int maxValue)
193 {
194 [GetNSSlider() setMinValue:minValue];
195 [GetNSSlider() setMaxValue:maxValue];
196 }
197
198 int wxSlider::GetMin() const
199 {
200 return [GetNSSlider() minValue];
201 }
202
203 int wxSlider::GetMax() const
204 {
205 return [GetNSSlider() maxValue];
206 }
207
208 void wxSlider::DoSetTickFreq(int n)
209 {
210 const int numTicks = (n > 0) ? ((GetMax() - GetMin()) / n) + 1 : 0;
211 [GetNSSlider() setNumberOfTickMarks:numTicks];
212 }
213
214 int wxSlider::GetTickFreq() const
215 {
216 const int numTicks = [GetNSSlider() numberOfTickMarks];
217 return ((numTicks != 0) ? (GetMax() - GetMin()) / (numTicks - 1) : 0);
218 }
219
220 void wxSlider::SetTickPos(int pos)
221 {
222 NSTickMarkPosition thePos = NSTickMarkBelow;
223 wxSize size = GetSize();
224
225 if (size.GetWidth() < size.GetHeight()) // NSSlider isVertical method can return -1 if it has not been displayed.
226 {
227 thePos = (pos != 1) ? NSTickMarkLeft : NSTickMarkRight;
228 }
229 else
230 {
231 thePos = (pos != 1) ? NSTickMarkBelow : NSTickMarkAbove;
232 }
233
234 [GetNSSlider() setTickMarkPosition:thePos];
235 }
236
237 void wxSlider::SetLineSize(int lineSize)
238 {
239 // to do
240 }
241
242 void wxSlider::SetPageSize(int pageSize)
243 {
244 // to do
245 }
246
247 int wxSlider::GetLineSize() const
248 {
249 return 1;
250 }
251
252 int wxSlider::GetPageSize() const
253 {
254 return 1;
255 }
256
257 int wxSlider::GetThumbLength() const
258 {
259 return 1;
260 }
261
262 void wxSlider::SetThumbLength(int lenPixels)
263 {
264 // to do
265 }
266
267 #endif // wxUSE_SLIDER