| | 1 | /////////////////////////////////////////////////////////////////////////////// |
| | 2 | // Name: wx/gtk/private/event.h |
| | 3 | // Purpose: Helper functions for working with GDK and wx events |
| | 4 | // Author: Vaclav Slavik |
| | 5 | // Created: 2011-10-14 |
| | 6 | // RCS-ID: $Id$ |
| | 7 | // Copyright: (c) 2011 Vaclav Slavik |
| | 8 | // Licence: wxWindows licence |
| | 9 | /////////////////////////////////////////////////////////////////////////////// |
| | 10 | |
| | 11 | #ifndef _GTK_PRIVATE_EVENT_H_ |
| | 12 | #define _GTK_PRIVATE_EVENT_H_ |
| | 13 | |
| | 14 | #if !GTK_CHECK_VERSION(2,10,0) |
| | 15 | // GTK+ can reliably detect Meta key state only since 2.10 when |
| | 16 | // GDK_META_MASK was introduced -- there wasn't any way to detect it |
| | 17 | // in older versions. wxGTK used GDK_MOD2_MASK for this purpose, but |
| | 18 | // GDK_MOD2_MASK is documented as: |
| | 19 | // |
| | 20 | // the fifth modifier key (it depends on the modifier mapping of the X |
| | 21 | // server which key is interpreted as this modifier) |
| | 22 | // |
| | 23 | // In other words, it isn't guaranteed to map to Meta. This is a real |
| | 24 | // problem: it is common to map NumLock to it (in fact, it's an exception |
| | 25 | // if the X server _doesn't_ use it for NumLock). So the old code caused |
| | 26 | // wxKeyEvent::MetaDown() to always return true as long as NumLock was on |
| | 27 | // on many systems, which broke all applications using |
| | 28 | // wxKeyEvent::GetModifiers() to check modifiers state (see e.g. here: |
| | 29 | // http://tinyurl.com/56lsk2). |
| | 30 | // |
| | 31 | // Because of this, it's better to not detect Meta key state at all than |
| | 32 | // to detect it incorrectly. Hence the following #define, which causes |
| | 33 | // m_metaDown to be always set to false. |
| | 34 | #define GDK_META_MASK 0 |
| | 35 | #endif |
| | 36 | |
| | 37 | namespace wxGTKImpl |
| | 38 | { |
| | 39 | |
| | 40 | // init wxMouseEvent with the info from GdkEventXXX struct |
| | 41 | template<typename T> void InitMouseEvent(wxWindowGTK *win, |
| | 42 | wxMouseEvent& event, |
| | 43 | T *gdk_event) |
| | 44 | { |
| | 45 | event.m_shiftDown = (gdk_event->state & GDK_SHIFT_MASK) != 0; |
| | 46 | event.m_controlDown = (gdk_event->state & GDK_CONTROL_MASK) != 0; |
| | 47 | event.m_altDown = (gdk_event->state & GDK_MOD1_MASK) != 0; |
| | 48 | event.m_metaDown = (gdk_event->state & GDK_META_MASK) != 0; |
| | 49 | event.m_leftDown = (gdk_event->state & GDK_BUTTON1_MASK) != 0; |
| | 50 | event.m_middleDown = (gdk_event->state & GDK_BUTTON2_MASK) != 0; |
| | 51 | event.m_rightDown = (gdk_event->state & GDK_BUTTON3_MASK) != 0; |
| | 52 | |
| | 53 | // In gdk/win32 VK_XBUTTON1 is translated to GDK_BUTTON4_MASK |
| | 54 | // and VK_XBUTTON2 to GDK_BUTTON5_MASK. In x11/gdk buttons 4/5 |
| | 55 | // are wheel rotation and buttons 8/9 don't change the state. |
| | 56 | event.m_aux1Down = (gdk_event->state & GDK_BUTTON4_MASK) != 0; |
| | 57 | event.m_aux2Down = (gdk_event->state & GDK_BUTTON5_MASK) != 0; |
| | 58 | |
| | 59 | wxPoint pt = win->GetClientAreaOrigin(); |
| | 60 | event.m_x = (wxCoord)gdk_event->x - pt.x; |
| | 61 | event.m_y = (wxCoord)gdk_event->y - pt.y; |
| | 62 | |
| | 63 | if ((win->m_wxwindow) && (win->GetLayoutDirection() == wxLayout_RightToLeft)) |
| | 64 | { |
| | 65 | // origin in the upper right corner |
| | 66 | GtkAllocation a; |
| | 67 | gtk_widget_get_allocation(win->m_wxwindow, &a); |
| | 68 | int window_width = a.width; |
| | 69 | event.m_x = window_width - event.m_x; |
| | 70 | } |
| | 71 | |
| | 72 | event.SetEventObject( win ); |
| | 73 | event.SetId( win->GetId() ); |
| | 74 | event.SetTimestamp( gdk_event->time ); |
| | 75 | } |
| | 76 | |
| | 77 | } // namespace wxGTKImpl |
| | 78 | |
| | 79 | #endif // _GTK_PRIVATE_EVENT_H_ |
| | 80 | |
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