src/cocoa/slider.mm

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