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a6d70308 JS |
1 | ///////////////////////////////////////////////////////////////////////////// |
2 | // Name: laywin.cpp | |
3 | // Purpose: Implements a simple layout algorithm, plus | |
4 | // wxSashLayoutWindow which is an example of a window with | |
5 | // layout-awareness (via event handlers). This is suited to | |
6 | // IDE-style window layout. | |
7 | // Author: Julian Smart | |
8 | // Modified by: | |
9 | // Created: 04/01/98 | |
10 | // RCS-ID: $Id$ | |
11 | // Copyright: (c) Julian Smart | |
88ac883a | 12 | // Licence: wxWindows licence |
a6d70308 JS |
13 | ///////////////////////////////////////////////////////////////////////////// |
14 | ||
27529614 JS |
15 | #ifdef __GNUG__ |
16 | #pragma implementation "laywin.h" | |
17 | #endif | |
18 | ||
a6d70308 JS |
19 | // For compilers that support precompilation, includes "wx/wx.h". |
20 | #include "wx/wxprec.h" | |
21 | ||
22 | #ifdef __BORLANDC__ | |
23 | #pragma hdrstop | |
24 | #endif | |
25 | ||
26 | #ifndef WX_PRECOMP | |
27 | #include "wx/wx.h" | |
28 | #include "wx/mdi.h" | |
29 | #endif | |
30 | ||
31 | #include "wx/laywin.h" | |
32 | ||
33 | IMPLEMENT_DYNAMIC_CLASS(wxQueryLayoutInfoEvent, wxEvent) | |
34 | IMPLEMENT_DYNAMIC_CLASS(wxCalculateLayoutEvent, wxEvent) | |
35 | ||
88ac883a | 36 | #if wxUSE_SASH |
a6d70308 JS |
37 | IMPLEMENT_CLASS(wxSashLayoutWindow, wxSashWindow) |
38 | ||
39 | BEGIN_EVENT_TABLE(wxSashLayoutWindow, wxSashWindow) | |
40 | EVT_CALCULATE_LAYOUT(wxSashLayoutWindow::OnCalculateLayout) | |
41 | EVT_QUERY_LAYOUT_INFO(wxSashLayoutWindow::OnQueryLayoutInfo) | |
42 | END_EVENT_TABLE() | |
43 | ||
f6bcfd97 BP |
44 | bool wxSashLayoutWindow::Create(wxWindow *parent, wxWindowID id, const wxPoint& pos, |
45 | const wxSize& size, long style, const wxString& name) | |
46 | { | |
47 | return wxSashWindow::Create(parent, id, pos, size, style, name); | |
48 | } | |
49 | ||
50 | void wxSashLayoutWindow::Init() | |
a6d70308 JS |
51 | { |
52 | m_orientation = wxLAYOUT_HORIZONTAL; | |
53 | m_alignment = wxLAYOUT_TOP; | |
54 | } | |
55 | ||
2243eed5 | 56 | // This is the function that wxLayoutAlgorithm calls to ascertain the window |
a6d70308 JS |
57 | // dimensions. |
58 | void wxSashLayoutWindow::OnQueryLayoutInfo(wxQueryLayoutInfoEvent& event) | |
59 | { | |
341287bf | 60 | // int flags = event.GetFlags(); |
a6d70308 JS |
61 | int requestedLength = event.GetRequestedLength(); |
62 | ||
a6d70308 JS |
63 | event.SetOrientation(m_orientation); |
64 | event.SetAlignment(m_alignment); | |
65 | ||
66 | if (m_orientation == wxLAYOUT_HORIZONTAL) | |
67 | event.SetSize(wxSize(requestedLength, m_defaultSize.y)); | |
68 | else | |
69 | event.SetSize(wxSize(m_defaultSize.x, requestedLength)); | |
70 | } | |
71 | ||
72 | // Called by parent to allow window to take a bit out of the | |
73 | // client rectangle, and size itself if not in wxLAYOUT_QUERY mode. | |
a6d70308 JS |
74 | |
75 | void wxSashLayoutWindow::OnCalculateLayout(wxCalculateLayoutEvent& event) | |
76 | { | |
77 | wxRect clientSize(event.GetRect()); | |
78 | ||
79 | int flags = event.GetFlags(); | |
80 | ||
81 | if (!IsShown()) | |
82 | return; | |
83 | ||
84 | // Let's assume that all windows stretch the full extent of the window in | |
85 | // the direction of that window orientation. This will work for non-docking toolbars, | |
86 | // and the status bar. Note that the windows have to have been created in a certain | |
87 | // order to work, else you might get a left-aligned window going to the bottom | |
88 | // of the window, and the status bar appearing to the right of it. The | |
89 | // status bar would have to be created after or before the toolbar(s). | |
90 | ||
91 | wxRect thisRect; | |
92 | ||
93 | // Try to stretch | |
94 | int length = (GetOrientation() == wxLAYOUT_HORIZONTAL) ? clientSize.width : clientSize.height; | |
95 | wxLayoutOrientation orient = GetOrientation(); | |
96 | ||
97 | // We assume that a window that says it's horizontal, wants to be stretched in that | |
98 | // direction. Is this distinction too fine? Do we assume that any horizontal | |
99 | // window needs to be stretched in that direction? Possibly. | |
100 | int whichDimension = (GetOrientation() == wxLAYOUT_HORIZONTAL) ? wxLAYOUT_LENGTH_X : wxLAYOUT_LENGTH_Y; | |
101 | ||
102 | wxQueryLayoutInfoEvent infoEvent(GetId()); | |
103 | infoEvent.SetEventObject(this); | |
104 | infoEvent.SetRequestedLength(length); | |
105 | infoEvent.SetFlags(orient | whichDimension); | |
106 | ||
107 | if (!GetEventHandler()->ProcessEvent(infoEvent)) | |
108 | return; | |
109 | ||
110 | wxSize sz = infoEvent.GetSize(); | |
111 | ||
112 | if (sz.x == 0 && sz.y == 0) // Assume it's invisible | |
113 | return; | |
114 | ||
115 | // Now we know the size it wants to be. We wish to decide where to place it, i.e. | |
116 | // how it's aligned. | |
117 | switch (GetAlignment()) | |
118 | { | |
119 | case wxLAYOUT_TOP: | |
120 | { | |
121 | thisRect.x = clientSize.x; thisRect.y = clientSize.y; | |
122 | thisRect.width = sz.x; thisRect.height = sz.y; | |
123 | clientSize.y += thisRect.height; | |
124 | clientSize.height -= thisRect.height; | |
125 | break; | |
126 | } | |
127 | case wxLAYOUT_LEFT: | |
128 | { | |
129 | thisRect.x = clientSize.x; thisRect.y = clientSize.y; | |
130 | thisRect.width = sz.x; thisRect.height = sz.y; | |
131 | clientSize.x += thisRect.width; | |
132 | clientSize.width -= thisRect.width; | |
133 | break; | |
134 | } | |
135 | case wxLAYOUT_RIGHT: | |
136 | { | |
137 | thisRect.x = clientSize.x + (clientSize.width - sz.x); thisRect.y = clientSize.y; | |
138 | thisRect.width = sz.x; thisRect.height = sz.y; | |
139 | clientSize.width -= thisRect.width; | |
140 | break; | |
141 | } | |
142 | case wxLAYOUT_BOTTOM: | |
143 | { | |
144 | thisRect.x = clientSize.x; thisRect.y = clientSize.y + (clientSize.height - sz.y); | |
145 | thisRect.width = sz.x; thisRect.height = sz.y; | |
146 | clientSize.height -= thisRect.height; | |
147 | break; | |
148 | } | |
341287bf JS |
149 | case wxLAYOUT_NONE: |
150 | { | |
88ac883a | 151 | break; |
341287bf JS |
152 | } |
153 | ||
a6d70308 JS |
154 | } |
155 | ||
156 | if ((flags & wxLAYOUT_QUERY) == 0) | |
157 | { | |
158 | // If not in query mode, resize the window. | |
159 | // TODO: add wxRect& form to wxWindow::SetSize | |
f6bcfd97 BP |
160 | wxSize sz = GetSize(); |
161 | wxPoint pos = GetPosition(); | |
a6d70308 | 162 | SetSize(thisRect.x, thisRect.y, thisRect.width, thisRect.height); |
f6bcfd97 BP |
163 | |
164 | // Make sure the sash is erased when the window is resized | |
165 | if ((pos.x != thisRect.x || pos.y != thisRect.y || sz.x != thisRect.width || sz.y != thisRect.height) && | |
166 | (GetSashVisible(wxSASH_TOP) || GetSashVisible(wxSASH_RIGHT) || GetSashVisible(wxSASH_BOTTOM) || GetSashVisible(wxSASH_LEFT))) | |
167 | Refresh(TRUE); | |
168 | ||
a6d70308 JS |
169 | } |
170 | ||
171 | event.SetRect(clientSize); | |
172 | } | |
88ac883a | 173 | #endif // wxUSE_SASH |
a6d70308 JS |
174 | |
175 | /* | |
176 | * wxLayoutAlgorithm | |
177 | */ | |
178 | ||
179 | // Lays out windows for an MDI frame. The MDI client area gets what's left | |
180 | // over. | |
2243eed5 | 181 | bool wxLayoutAlgorithm::LayoutMDIFrame(wxMDIParentFrame* frame, wxRect* r) |
a6d70308 JS |
182 | { |
183 | int cw, ch; | |
184 | frame->GetClientSize(& cw, & ch); | |
185 | ||
186 | wxRect rect(0, 0, cw, ch); | |
2243eed5 JS |
187 | if (r) |
188 | rect = * r; | |
a6d70308 JS |
189 | |
190 | wxCalculateLayoutEvent event; | |
191 | event.SetRect(rect); | |
192 | ||
c0ed460c | 193 | wxNode* node = frame->GetChildren().First(); |
a6d70308 JS |
194 | while (node) |
195 | { | |
196 | wxWindow* win = (wxWindow*) node->Data(); | |
197 | ||
198 | event.SetId(win->GetId()); | |
199 | event.SetEventObject(win); | |
200 | event.SetFlags(0); // ?? | |
201 | ||
202 | win->GetEventHandler()->ProcessEvent(event); | |
203 | ||
204 | node = node->Next(); | |
205 | } | |
206 | ||
207 | wxWindow* clientWindow = frame->GetClientWindow(); | |
208 | ||
209 | rect = event.GetRect(); | |
210 | ||
211 | clientWindow->SetSize(rect.x, rect.y, rect.width, rect.height); | |
212 | ||
213 | return TRUE; | |
214 | } | |
215 | ||
f9b1708c JS |
216 | // Layout algorithm for any window. mainWindow gets what's left over. |
217 | bool wxLayoutAlgorithm::LayoutWindow(wxWindow* parent, wxWindow* mainWindow) | |
a6d70308 | 218 | { |
f9b1708c JS |
219 | // Test if the parent is a sash window, and if so, |
220 | // reduce the available space to allow space for any active edges. | |
221 | ||
222 | int leftMargin = 0, rightMargin = 0, topMargin = 0, bottomMargin = 0; | |
88ac883a | 223 | #if wxUSE_SASH |
f9b1708c JS |
224 | if (parent->IsKindOf(CLASSINFO(wxSashWindow))) |
225 | { | |
226 | wxSashWindow* sashWindow = (wxSashWindow*) parent; | |
227 | ||
228 | leftMargin = sashWindow->GetExtraBorderSize(); | |
229 | rightMargin = sashWindow->GetExtraBorderSize(); | |
230 | topMargin = sashWindow->GetExtraBorderSize(); | |
231 | bottomMargin = sashWindow->GetExtraBorderSize(); | |
232 | ||
233 | if (sashWindow->GetSashVisible(wxSASH_LEFT)) | |
234 | leftMargin += sashWindow->GetDefaultBorderSize(); | |
235 | if (sashWindow->GetSashVisible(wxSASH_RIGHT)) | |
236 | rightMargin += sashWindow->GetDefaultBorderSize(); | |
237 | if (sashWindow->GetSashVisible(wxSASH_TOP)) | |
238 | topMargin += sashWindow->GetDefaultBorderSize(); | |
239 | if (sashWindow->GetSashVisible(wxSASH_BOTTOM)) | |
240 | bottomMargin += sashWindow->GetDefaultBorderSize(); | |
241 | } | |
88ac883a | 242 | #endif // wxUSE_SASH |
f9b1708c | 243 | |
a6d70308 | 244 | int cw, ch; |
f9b1708c | 245 | parent->GetClientSize(& cw, & ch); |
a6d70308 | 246 | |
f9b1708c | 247 | wxRect rect(leftMargin, topMargin, cw - leftMargin - rightMargin, ch - topMargin - bottomMargin); |
a6d70308 JS |
248 | |
249 | wxCalculateLayoutEvent event; | |
250 | event.SetRect(rect); | |
251 | ||
2f82899b JS |
252 | // Find the last layout-aware window, so we can make it fill all remaining |
253 | // space. | |
254 | wxWindow* lastAwareWindow = NULL; | |
f9b1708c | 255 | wxNode* node = parent->GetChildren().First(); |
a6d70308 JS |
256 | while (node) |
257 | { | |
258 | wxWindow* win = (wxWindow*) node->Data(); | |
259 | ||
2f82899b JS |
260 | if (win->IsShown()) |
261 | { | |
262 | wxCalculateLayoutEvent tempEvent(win->GetId()); | |
263 | tempEvent.SetEventObject(win); | |
264 | tempEvent.SetFlags(wxLAYOUT_QUERY); | |
265 | tempEvent.SetRect(event.GetRect()); | |
266 | if (win->GetEventHandler()->ProcessEvent(tempEvent)) | |
267 | lastAwareWindow = win; | |
268 | } | |
269 | ||
270 | node = node->Next(); | |
271 | } | |
272 | ||
8c023dee | 273 | // Now do a dummy run to see if we have any space left for the final window (fail if not) |
2f82899b JS |
274 | node = parent->GetChildren().First(); |
275 | while (node) | |
276 | { | |
277 | wxWindow* win = (wxWindow*) node->Data(); | |
278 | ||
279 | // If mainWindow is NULL and we're at the last window, | |
280 | // skip this, because we'll simply make it fit the remaining space. | |
8c023dee JS |
281 | if (win->IsShown() && (win != mainWindow) && (mainWindow != NULL || win != lastAwareWindow)) |
282 | { | |
283 | event.SetId(win->GetId()); | |
284 | event.SetEventObject(win); | |
285 | event.SetFlags(wxLAYOUT_QUERY); | |
286 | ||
287 | win->GetEventHandler()->ProcessEvent(event); | |
288 | } | |
289 | ||
290 | node = node->Next(); | |
291 | } | |
292 | ||
293 | if (event.GetRect().GetWidth() < 0 || event.GetRect().GetHeight() < 0) | |
294 | return FALSE; | |
295 | ||
296 | event.SetRect(rect); | |
297 | ||
298 | node = parent->GetChildren().First(); | |
299 | while (node) | |
300 | { | |
301 | wxWindow* win = (wxWindow*) node->Data(); | |
302 | ||
303 | // If mainWindow is NULL and we're at the last window, | |
304 | // skip this, because we'll simply make it fit the remaining space. | |
305 | if (win->IsShown() && (win != mainWindow) && (mainWindow != NULL || win != lastAwareWindow)) | |
f6bcfd97 BP |
306 | { |
307 | event.SetId(win->GetId()); | |
308 | event.SetEventObject(win); | |
309 | event.SetFlags(0); // ?? | |
a6d70308 | 310 | |
f6bcfd97 BP |
311 | win->GetEventHandler()->ProcessEvent(event); |
312 | } | |
a6d70308 JS |
313 | |
314 | node = node->Next(); | |
315 | } | |
316 | ||
317 | rect = event.GetRect(); | |
318 | ||
44c4a334 | 319 | if (mainWindow) |
d11bb14f | 320 | mainWindow->SetSize(rect.x, rect.y, wxMax(0, rect.width), wxMax(0, rect.height)); |
2f82899b JS |
321 | else if (lastAwareWindow) |
322 | { | |
323 | // Fit the remaining space | |
d11bb14f | 324 | lastAwareWindow->SetSize(rect.x, rect.y, wxMax(0, rect.width), wxMax(0, rect.height)); |
2f82899b | 325 | } |
a6d70308 JS |
326 | |
327 | return TRUE; | |
328 | } | |
329 |