1 /*
2 * Copyright (C) 2009 Kevin Ollivier All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "config.h"
27
28 #include "scrollbar_render.h"
29
30 #include <wx/defs.h>
31 #include <wx/dc.h>
32 #include <wx/dcgraph.h>
33 #include <wx/renderer.h>
34 #include <wx/settings.h>
35 #include <wx/window.h>
36
37 #include <gtk/gtk.h>
38
39 #if wxCHECK_VERSION(2, 9, 0)
40 #include <wx/gtk/dc.h>
41 #else
42 #include "wx/gtk/win_gtk.h"
43 #endif
44
wxStyleForPart(wxScrollbarPart part,wxScrollbarPart focusPart,wxScrollbarPart hoverPart,int flags)45 int wxStyleForPart(wxScrollbarPart part, wxScrollbarPart focusPart, wxScrollbarPart hoverPart, int flags)
46 {
47 int style = 0;
48 if (flags == wxCONTROL_DISABLED)
49 style = wxCONTROL_DISABLED;
50 else if (part == focusPart)
51 style = wxCONTROL_PRESSED;
52 else if (part == hoverPart)
53 style = wxCONTROL_CURRENT;
54
55 return style;
56 }
57
GetButtonWidget()58 GtkWidget* GetButtonWidget()
59 {
60 static GtkWidget *s_button = NULL;
61 static GtkWidget *s_window = NULL;
62
63 if ( !s_button )
64 {
65 s_window = gtk_window_new( GTK_WINDOW_POPUP );
66 gtk_widget_realize( s_window );
67 s_button = gtk_button_new();
68 gtk_container_add( GTK_CONTAINER(s_window), s_button );
69 gtk_widget_realize( s_button );
70 }
71
72 return s_button;
73 }
74
75
wxGetGdkWindowForDC(wxWindow * win,wxDC & dc)76 GdkWindow* wxGetGdkWindowForDC(wxWindow* win, wxDC& dc)
77 {
78 GdkWindow* gdk_window = NULL;
79 #if wxCHECK_VERSION(2, 9, 0)
80 if ( dc.IsKindOf( CLASSINFO(wxGCDC) ) )
81 gdk_window = win->GTKGetDrawingWindow();
82 else
83 {
84 wxGTKDCImpl *impl = wxDynamicCast(dc.GetImpl(), wxGTKDCImpl);
85 if ( impl )
86 gdk_window = impl->GetGDKWindow();
87 }
88 #else // wx < 2.9
89 // The way to get a GdkWindow* from a wxWindow is to use
90 // GTK_PIZZA(win->m_wxwindow)->bin_window, but this approach
91 // won't work when drawing to a wxMemoryDC as it has its own
92 // GdkWindow* for its bitmap. wxWindowDC's GetGDKWindow() was
93 // designed to create a solution for all DCs, but we can't
94 // implement it with wxGCDC since it doesn't retain its wxWindow.
95 // So, to work around this, we use GetGDKWindow whenever possible
96 // and use bin_window for wxGCDC.
97 #if wxUSE_GRAPHICS_CONTEXT
98 if ( dc.IsKindOf( CLASSINFO(wxGCDC) ) )
99 gdk_window = GTK_PIZZA(win->m_wxwindow)->bin_window;
100 else
101 #endif
102 gdk_window = dc.GetGDKWindow();
103 wxASSERT_MSG( gdk_window,
104 wxT("cannot use wxRendererNative on wxDC of this type") );
105 #endif // wx 2.9/2.8
106
107 return gdk_window;
108 }
109
wxRenderer_DrawScrollbar(wxWindow * window,wxDC & dc,const wxRect & rect,wxOrientation orient,int current,wxScrollbarPart focusPart,wxScrollbarPart hoverPart,int max,int step,int flags)110 void wxRenderer_DrawScrollbar(wxWindow* window, wxDC& dc, const wxRect& rect, wxOrientation orient,
111 int current, wxScrollbarPart focusPart, wxScrollbarPart hoverPart, int max, int step, int flags)
112 {
113 bool horiz = orient == wxHORIZONTAL;
114 wxColour scrollbar_colour = wxSystemSettings::GetColour(wxSYS_COLOUR_SCROLLBAR);
115 dc.SetBrush(wxBrush(scrollbar_colour));
116 dc.SetPen(wxPen(wxSystemSettings::GetColour(wxSYS_COLOUR_BTNSHADOW)));
117 dc.DrawRectangle(rect.x, rect.y, rect.width, rect.height);
118
119 // when going from Cairo -> Gdk, any Cairo context transformations are lost
120 // so we need to alter the coordinates to reflect their transformed point.
121 double xtrans = 0;
122 double ytrans = 0;
123
124 wxGCDC* gcdc = wxDynamicCast(&dc, wxGCDC);
125 wxGraphicsContext* gc = gcdc->GetGraphicsContext();
126 gc->GetTransform().TransformPoint(&xtrans, &ytrans);
127
128 wxRendererNative& renderer = wxRendererNative::Get();
129 int x = rect.x + (int)xtrans;
130 int y = rect.y + (int)ytrans;
131
132 int buttonLength = 16;
133
134 renderer.DrawPushButton(window, dc, wxRect(x,y,buttonLength,buttonLength), wxStyleForPart(wxSCROLLPART_BACKBTNSTART, focusPart, hoverPart, flags));
135
136 GtkWidget* button = GetButtonWidget();
137 GdkWindow* gdk_window = wxGetGdkWindowForDC(window, dc);
138
139 GtkArrowType arrowType = GTK_ARROW_UP;
140 if (horiz)
141 arrowType = GTK_ARROW_LEFT;
142
143 gtk_paint_arrow( button->style, gdk_window, GTK_STATE_NORMAL, GTK_SHADOW_OUT, NULL, button, "arrow", arrowType, false, x + 4, y + 4, 8, 8);
144
145 wxRect buttonRect = rect;
146 int physicalLength = horiz ? rect.width : rect.height;
147 physicalLength -= buttonLength*2;
148 int thumbStart = 0;
149 int thumbLength = 0;
150 calcThumbStartAndLength(physicalLength, max, current, step, &thumbStart, &thumbLength);
151
152 if (horiz) {
153 buttonRect.x = x + thumbStart + buttonLength;
154 buttonRect.y = y;
155 buttonRect.width = thumbLength;
156 } else {
157 buttonRect.x = x;
158 buttonRect.y = y + thumbStart + buttonLength;
159 buttonRect.height = thumbLength;
160 }
161
162 renderer.DrawPushButton(window, dc, buttonRect, wxStyleForPart(wxSCROLLPART_THUMB, focusPart, hoverPart, flags));
163
164 if (horiz)
165 x += rect.width - buttonLength;
166 else
167 y += rect.height - buttonLength;
168
169 renderer.DrawPushButton(window, dc, wxRect(x,y,buttonLength,buttonLength), wxStyleForPart(wxSCROLLPART_FWDBTNEND, focusPart, hoverPart, flags));
170
171 if (horiz)
172 arrowType = GTK_ARROW_RIGHT;
173 else
174 arrowType = GTK_ARROW_DOWN;
175
176 gtk_paint_arrow( button->style, gdk_window, GTK_STATE_NORMAL, GTK_SHADOW_OUT, NULL, button, "arrow", arrowType, false, x + 4, y + 4, 8, 8);
177 }
178