| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: scrolbar.cpp |
| 3 | // Purpose: wxScrollBar |
| 4 | // Author: Julian Smart |
| 5 | // Modified by: |
| 6 | // Created: 17/09/98 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) Julian Smart |
| 9 | // Licence: wxWindows licence |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | #ifdef __GNUG__ |
| 13 | #pragma implementation "scrolbar.h" |
| 14 | #endif |
| 15 | |
| 16 | #include "wx/defs.h" |
| 17 | |
| 18 | #include "wx/scrolbar.h" |
| 19 | |
| 20 | #ifdef __VMS__ |
| 21 | #pragma message disable nosimpint |
| 22 | #endif |
| 23 | #include <X11/IntrinsicP.h> |
| 24 | #include <Xm/Xm.h> |
| 25 | #include <Xm/RowColumn.h> |
| 26 | #include <Xm/ScrollBar.h> |
| 27 | #ifdef __VMS__ |
| 28 | #pragma message enable nosimpint |
| 29 | #endif |
| 30 | |
| 31 | #include "wx/motif/private.h" |
| 32 | |
| 33 | static void wxScrollBarCallback(Widget widget, XtPointer clientData, |
| 34 | XmScaleCallbackStruct *cbs); |
| 35 | |
| 36 | IMPLEMENT_DYNAMIC_CLASS(wxScrollBar, wxControl) |
| 37 | |
| 38 | // Scrollbar |
| 39 | bool wxScrollBar::Create(wxWindow *parent, wxWindowID id, |
| 40 | const wxPoint& pos, |
| 41 | const wxSize& size, long style, |
| 42 | const wxValidator& validator, |
| 43 | const wxString& name) |
| 44 | { |
| 45 | if (!parent) |
| 46 | return FALSE; |
| 47 | parent->AddChild(this); |
| 48 | SetName(name); |
| 49 | m_backgroundColour = parent->GetBackgroundColour(); |
| 50 | m_foregroundColour = parent->GetForegroundColour(); |
| 51 | SetValidator(validator); |
| 52 | |
| 53 | m_windowStyle = style; |
| 54 | |
| 55 | if ( id == -1 ) |
| 56 | m_windowId = (int)NewControlId(); |
| 57 | else |
| 58 | m_windowId = id; |
| 59 | |
| 60 | int x = pos.x; |
| 61 | int y = pos.y; |
| 62 | int width = size.x; |
| 63 | int height = size.y; |
| 64 | |
| 65 | if (width == -1) |
| 66 | { |
| 67 | if (style & wxHORIZONTAL) |
| 68 | width = 140; |
| 69 | else |
| 70 | width = 12; |
| 71 | } |
| 72 | if (height == -1) |
| 73 | { |
| 74 | if (style & wxVERTICAL) |
| 75 | height = 140; |
| 76 | else |
| 77 | height = 12; |
| 78 | } |
| 79 | |
| 80 | Widget parentWidget = (Widget) parent->GetClientWidget(); |
| 81 | int direction = (style & wxHORIZONTAL) ? XmHORIZONTAL: XmVERTICAL; |
| 82 | |
| 83 | Widget scrollBarWidget = XtVaCreateManagedWidget("scrollBarWidget", |
| 84 | xmScrollBarWidgetClass, parentWidget, |
| 85 | XmNorientation, direction, |
| 86 | NULL); |
| 87 | |
| 88 | m_mainWidget = (Widget) scrollBarWidget; |
| 89 | |
| 90 | XtAddCallback(scrollBarWidget, XmNvalueChangedCallback, (XtCallbackProc)wxScrollBarCallback, (XtPointer)this); |
| 91 | XtAddCallback(scrollBarWidget, XmNdragCallback, (XtCallbackProc)wxScrollBarCallback, (XtPointer)this); |
| 92 | XtAddCallback(scrollBarWidget, XmNdecrementCallback, (XtCallbackProc)wxScrollBarCallback, (XtPointer)this); |
| 93 | XtAddCallback(scrollBarWidget, XmNincrementCallback, (XtCallbackProc)wxScrollBarCallback, (XtPointer)this); |
| 94 | XtAddCallback(scrollBarWidget, XmNpageDecrementCallback, (XtCallbackProc)wxScrollBarCallback, (XtPointer)this); |
| 95 | XtAddCallback(scrollBarWidget, XmNpageIncrementCallback, (XtCallbackProc)wxScrollBarCallback, (XtPointer)this); |
| 96 | XtAddCallback(scrollBarWidget, XmNtoTopCallback, (XtCallbackProc)wxScrollBarCallback, (XtPointer)this); |
| 97 | XtAddCallback(scrollBarWidget, XmNtoBottomCallback, (XtCallbackProc)wxScrollBarCallback, (XtPointer)this); |
| 98 | |
| 99 | SetCanAddEventHandler(TRUE); |
| 100 | AttachWidget (parent, m_mainWidget, (WXWidget) NULL, x, y, width, height); |
| 101 | ChangeBackgroundColour(); |
| 102 | |
| 103 | return TRUE; |
| 104 | } |
| 105 | |
| 106 | wxScrollBar::~wxScrollBar() |
| 107 | { |
| 108 | } |
| 109 | |
| 110 | void wxScrollBar::SetThumbPosition(int pos) |
| 111 | { |
| 112 | if (m_mainWidget) |
| 113 | { |
| 114 | XtVaSetValues ((Widget) m_mainWidget, |
| 115 | XmNvalue, pos, |
| 116 | NULL); |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | int wxScrollBar::GetThumbPosition() const |
| 121 | { |
| 122 | if (m_mainWidget) |
| 123 | { |
| 124 | int pos; |
| 125 | XtVaGetValues((Widget) m_mainWidget, |
| 126 | XmNvalue, &pos, NULL); |
| 127 | return pos; |
| 128 | } |
| 129 | else |
| 130 | return 0; |
| 131 | } |
| 132 | |
| 133 | void wxScrollBar::SetScrollbar(int position, int thumbSize, int range, int pageSize, |
| 134 | bool WXUNUSED(refresh)) |
| 135 | { |
| 136 | m_viewSize = pageSize; |
| 137 | m_pageSize = thumbSize; |
| 138 | m_objectSize = range; |
| 139 | |
| 140 | if (range == 0) |
| 141 | range = 1; |
| 142 | if (thumbSize == 0) |
| 143 | thumbSize = 1; |
| 144 | |
| 145 | XtVaSetValues((Widget) m_mainWidget, |
| 146 | XmNvalue, position, |
| 147 | XmNminimum, 0, |
| 148 | XmNmaximum, range, |
| 149 | XmNsliderSize, thumbSize, |
| 150 | XmNpageIncrement, pageSize, |
| 151 | NULL); |
| 152 | } |
| 153 | |
| 154 | void wxScrollBar::Command(wxCommandEvent& event) |
| 155 | { |
| 156 | SetThumbPosition(event.m_commandInt); |
| 157 | ProcessCommand(event); |
| 158 | } |
| 159 | |
| 160 | void wxScrollBar::ChangeFont(bool WXUNUSED(keepOriginalSize)) |
| 161 | { |
| 162 | // TODO |
| 163 | // Do anything for a scrollbar? A font will never be seen. |
| 164 | } |
| 165 | |
| 166 | void wxScrollBar::ChangeBackgroundColour() |
| 167 | { |
| 168 | wxWindow::ChangeBackgroundColour(); |
| 169 | |
| 170 | XtVaSetValues ((Widget) GetMainWidget(), |
| 171 | XmNtroughColor, m_backgroundColour.AllocColour(XtDisplay((Widget) GetMainWidget())), |
| 172 | NULL); |
| 173 | } |
| 174 | |
| 175 | void wxScrollBar::ChangeForegroundColour() |
| 176 | { |
| 177 | wxWindow::ChangeForegroundColour(); |
| 178 | } |
| 179 | |
| 180 | static void wxScrollBarCallback(Widget WXUNUSED(widget), XtPointer clientData, |
| 181 | XmScaleCallbackStruct *cbs) |
| 182 | { |
| 183 | wxScrollBar *scrollBar = (wxScrollBar *)clientData; |
| 184 | wxEventType eventType = wxEVT_NULL; |
| 185 | |
| 186 | switch (cbs->reason) |
| 187 | { |
| 188 | case XmCR_INCREMENT: |
| 189 | { |
| 190 | eventType = wxEVT_SCROLL_LINEDOWN; |
| 191 | break; |
| 192 | } |
| 193 | case XmCR_DECREMENT: |
| 194 | { |
| 195 | eventType = wxEVT_SCROLL_LINEUP; |
| 196 | break; |
| 197 | } |
| 198 | case XmCR_DRAG: |
| 199 | { |
| 200 | eventType = wxEVT_SCROLL_THUMBTRACK; |
| 201 | break; |
| 202 | } |
| 203 | case XmCR_VALUE_CHANGED: |
| 204 | { |
| 205 | eventType = wxEVT_SCROLL_THUMBRELEASE; |
| 206 | break; |
| 207 | } |
| 208 | case XmCR_PAGE_INCREMENT: |
| 209 | { |
| 210 | eventType = wxEVT_SCROLL_PAGEDOWN; |
| 211 | break; |
| 212 | } |
| 213 | case XmCR_PAGE_DECREMENT: |
| 214 | { |
| 215 | eventType = wxEVT_SCROLL_PAGEUP; |
| 216 | break; |
| 217 | } |
| 218 | case XmCR_TO_TOP: |
| 219 | { |
| 220 | eventType = wxEVT_SCROLL_TOP; |
| 221 | break; |
| 222 | } |
| 223 | case XmCR_TO_BOTTOM: |
| 224 | { |
| 225 | eventType = wxEVT_SCROLL_BOTTOM; |
| 226 | break; |
| 227 | } |
| 228 | default: |
| 229 | { |
| 230 | // Should never get here |
| 231 | wxFAIL_MSG("Unknown scroll event."); |
| 232 | break; |
| 233 | } |
| 234 | } |
| 235 | |
| 236 | wxScrollEvent event(eventType, scrollBar->GetId()); |
| 237 | event.SetEventObject(scrollBar); |
| 238 | event.SetPosition(cbs->value); |
| 239 | scrollBar->GetEventHandler()->ProcessEvent(event); |
| 240 | /* |
| 241 | if (!scrollBar->inSetValue) |
| 242 | scrollBar->ProcessCommand(event); |
| 243 | */ |
| 244 | } |
| 245 | |