src/gtk/minifram.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/minifram.cpp
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Robert Roebling
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #if wxUSE_MINIFRAME
  14
  15 #include "wx/minifram.h"
  16
  17 #ifndef WX_PRECOMP
  18     #include "wx/settings.h"
  19     #include "wx/dcclient.h"
  20     #include "wx/image.h"
  21 #endif
  22
  23 #include "wx/gtk/win_gtk.h"
  24 #include "wx/gtk/private.h"
  25
  26 //-----------------------------------------------------------------------------
  27 // data
  28 //-----------------------------------------------------------------------------
  29
  30 extern bool        g_blockEventsOnDrag;
  31 extern bool        g_blockEventsOnScroll;
  32 extern GtkWidget  *wxGetRootWindow();
  33
  34 //-----------------------------------------------------------------------------
  35 // "expose_event" of m_mainWidget
  36 //-----------------------------------------------------------------------------
  37
  38 // StepColour() it a utility function that simply darkens
  39 // or lightens a color, based on the specified percentage
  40 static wxColor StepColour(const wxColor& c, int percent)
  41 {
  42     int r = c.Red(), g = c.Green(), b = c.Blue();
  43     return wxColour((unsigned char)wxMin((r*percent)/100,255),
  44                     (unsigned char)wxMin((g*percent)/100,255),
  45                     (unsigned char)wxMin((b*percent)/100,255));
  46 }
  47
  48 static wxColor LightContrastColour(const wxColour& c)
  49 {
  50     int amount = 120;
  51
  52     // if the color is especially dark, then
  53     // make the contrast even lighter
  54     if (c.Red() < 128 && c.Green() < 128 && c.Blue() < 128)
  55         amount = 160;
  56
  57     return StepColour(c, amount);
  58 }
  59
  60 extern "C" {
  61 static void gtk_window_own_expose_callback( GtkWidget *widget, GdkEventExpose *gdk_event, wxMiniFrame *win )
  62 {
  63     // don't need to install idle handler, its done from "event" signal
  64
  65     if (!win->m_hasVMT) return;
  66     if (gdk_event->count > 0) return;
  67
  68     GtkPizza *pizza = GTK_PIZZA(widget);
  69
  70     gtk_paint_shadow (widget->style,
  71                       pizza->bin_window,
  72                       GTK_STATE_NORMAL,
  73                       GTK_SHADOW_OUT,
  74                       NULL, NULL, NULL, // FIXME: No clipping?
  75                       0, 0,
  76                       win->m_width, win->m_height);
  77
  78     int style = win->GetWindowStyle();
  79
  80     wxClientDC dc(win);
  81     // Hack alert
  82     dc.m_window = pizza->bin_window;
  83
  84     if (style & wxRESIZE_BORDER)
  85     {
  86         dc.SetBrush( *wxGREY_BRUSH );
  87         dc.SetPen( *wxTRANSPARENT_PEN );
  88         dc.DrawRectangle( win->m_width - 14, win->m_height-14, 14, 14 );
  89     }
  90
  91     if (!win->GetTitle().empty() &&
  92         ((style & wxCAPTION) ||
  93          (style & wxTINY_CAPTION_HORIZ) ||
  94          (style & wxTINY_CAPTION_VERT)))
  95     {
  96         dc.SetFont( *wxSMALL_FONT );
  97         int height = dc.GetCharHeight();
  98
  99         wxBrush brush( LightContrastColour( wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHT) ) );
 100         dc.SetBrush( brush );
 101         dc.SetPen( *wxTRANSPARENT_PEN );
 102         dc.DrawRectangle( 3, 3, win->m_width - 7, height-2 );
 103
 104         dc.SetTextForeground( *wxWHITE );
 105         dc.DrawText( win->GetTitle(), 6, 3 );
 106
 107         if (style & wxCLOSE_BOX)
 108             dc.DrawBitmap( win->m_closeButton, win->m_width-19, 3, true );
 109     }
 110 }
 111 }
 112
 113 //-----------------------------------------------------------------------------
 114 // "button_press_event" of m_mainWidget
 115 //-----------------------------------------------------------------------------
 116
 117 extern "C" {
 118 static gint gtk_window_button_press_callback( GtkWidget *widget, GdkEventButton *gdk_event, wxMiniFrame *win )
 119 {
 120     // don't need to install idle handler, its done from "event" signal
 121
 122     if (!win->m_hasVMT) return FALSE;
 123     if (g_blockEventsOnDrag) return TRUE;
 124     if (g_blockEventsOnScroll) return TRUE;
 125
 126     if (win->m_isDragging) return TRUE;
 127
 128     GtkPizza *pizza = GTK_PIZZA(widget);
 129     if (gdk_event->window != pizza->bin_window) return TRUE;
 130
 131     int style = win->GetWindowStyle();
 132
 133     int y = (int)gdk_event->y;
 134     int x = (int)gdk_event->x;
 135
 136     if ((style & wxRESIZE_BORDER) &&
 137         (x > win->m_width-14) && (y > win->m_height-14))
 138     {
 139         GtkWidget *ancestor = gtk_widget_get_toplevel( widget );
 140
 141         GdkWindow *source = GTK_PIZZA(widget)->bin_window;
 142
 143         int org_x = 0;
 144         int org_y = 0;
 145         gdk_window_get_origin( source, &org_x, &org_y );
 146
 147         gtk_window_begin_resize_drag (GTK_WINDOW (ancestor),
 148                                   GDK_WINDOW_EDGE_SOUTH_EAST,
 149                                   1,
 150                                   org_x + x,
 151                                   org_y + y,
 152                                   0);
 153
 154         return TRUE;
 155     }
 156
 157     if ((style & wxCLOSE_BOX) &&
 158         ((style & wxCAPTION) || (style & wxTINY_CAPTION_HORIZ) || (style & wxTINY_CAPTION_VERT)))
 159     {
 160         if ((y > 3) && (y < 19) && (x > win->m_width-19) && (x < win->m_width-3))
 161         {
 162             win->Close();
 163             return TRUE;
 164         }
 165     }
 166
 167     wxClientDC dc(win);
 168     dc.SetFont( *wxSMALL_FONT );
 169     int height = dc.GetCharHeight() + 1;
 170
 171
 172     if (y > height) return TRUE;
 173
 174     gdk_window_raise( win->m_widget->window );
 175
 176     gdk_pointer_grab( widget->window, FALSE,
 177                       (GdkEventMask)
 178                          (GDK_BUTTON_PRESS_MASK |
 179                           GDK_BUTTON_RELEASE_MASK |
 180                           GDK_POINTER_MOTION_MASK        |
 181                           GDK_POINTER_MOTION_HINT_MASK  |
 182                           GDK_BUTTON_MOTION_MASK        |
 183                           GDK_BUTTON1_MOTION_MASK),
 184                       (GdkWindow *) NULL,
 185                       (GdkCursor *) NULL,
 186                       (unsigned int) GDK_CURRENT_TIME );
 187
 188     win->m_diffX = x;
 189     win->m_diffY = y;
 190     win->m_oldX = 0;
 191     win->m_oldY = 0;
 192
 193     win->m_isDragging = true;
 194
 195     return TRUE;
 196 }
 197 }
 198
 199 //-----------------------------------------------------------------------------
 200 // "button_release_event" of m_mainWidget
 201 //-----------------------------------------------------------------------------
 202
 203 extern "C" {
 204 static gint gtk_window_button_release_callback( GtkWidget *widget, GdkEventButton *gdk_event, wxMiniFrame *win )
 205 {
 206     // don't need to install idle handler, its done from "event" signal
 207
 208     if (!win->m_hasVMT) return FALSE;
 209     if (g_blockEventsOnDrag) return TRUE;
 210     if (g_blockEventsOnScroll) return TRUE;
 211
 212     if (!win->m_isDragging) return TRUE;
 213
 214     win->m_isDragging = false;
 215
 216     int x = (int)gdk_event->x;
 217     int y = (int)gdk_event->y;
 218
 219     gdk_pointer_ungrab ( (guint32)GDK_CURRENT_TIME );
 220     int org_x = 0;
 221     int org_y = 0;
 222     gdk_window_get_origin( widget->window, &org_x, &org_y );
 223     x += org_x - win->m_diffX;
 224     y += org_y - win->m_diffY;
 225     win->m_x = x;
 226     win->m_y = y;
 227     gtk_window_move( GTK_WINDOW(win->m_widget), x, y );
 228
 229     return TRUE;
 230 }
 231 }
 232
 233 //-----------------------------------------------------------------------------
 234 // "leave_notify_event" of m_mainWidget
 235 //-----------------------------------------------------------------------------
 236
 237 extern "C" {
 238 static gboolean
 239 gtk_window_leave_callback( GtkWidget *widget, GdkEventCrossing *gdk_event, wxMiniFrame *win )
 240 {
 241     // don't need to install idle handler, its done from "event" signal
 242
 243     if (!win->m_hasVMT) return FALSE;
 244     if (g_blockEventsOnDrag) return FALSE;
 245
 246     gdk_window_set_cursor( widget->window, NULL );
 247
 248     return FALSE;
 249 }
 250 }
 251
 252 //-----------------------------------------------------------------------------
 253 // "motion_notify_event" of m_mainWidget
 254 //-----------------------------------------------------------------------------
 255
 256 extern "C" {
 257 static gint
 258 gtk_window_motion_notify_callback( GtkWidget *widget, GdkEventMotion *gdk_event, wxMiniFrame *win )
 259 {
 260     // don't need to install idle handler, its done from "event" signal
 261
 262     if (!win->m_hasVMT) return FALSE;
 263     if (g_blockEventsOnDrag) return TRUE;
 264     if (g_blockEventsOnScroll) return TRUE;
 265
 266     if (gdk_event->is_hint)
 267     {
 268        int x = 0;
 269        int y = 0;
 270        GdkModifierType state;
 271        gdk_window_get_pointer(gdk_event->window, &x, &y, &state);
 272        gdk_event->x = x;
 273        gdk_event->y = y;
 274        gdk_event->state = state;
 275     }
 276
 277     int style = win->GetWindowStyle();
 278
 279     int x = (int)gdk_event->x;
 280     int y = (int)gdk_event->y;
 281
 282     if (!win->m_isDragging)
 283     {
 284         if (style & wxRESIZE_BORDER)
 285         {
 286             if ((x > win->m_width-14) && (y > win->m_height-14))
 287                gdk_window_set_cursor( widget->window, gdk_cursor_new( GDK_BOTTOM_RIGHT_CORNER ) );
 288             else
 289                gdk_window_set_cursor( widget->window, NULL );
 290         }
 291         return TRUE;
 292     }
 293
 294     win->m_oldX = x - win->m_diffX;
 295     win->m_oldY = y - win->m_diffY;
 296
 297     int org_x = 0;
 298     int org_y = 0;
 299     gdk_window_get_origin( widget->window, &org_x, &org_y );
 300     x += org_x - win->m_diffX;
 301     y += org_y - win->m_diffY;
 302     win->m_x = x;
 303     win->m_y = y;
 304     gtk_window_move( GTK_WINDOW(win->m_widget), x, y );
 305
 306
 307     return TRUE;
 308 }
 309 }
 310
 311 //-----------------------------------------------------------------------------
 312 // wxMiniFrame
 313 //-----------------------------------------------------------------------------
 314
 315 static unsigned char close_bits[]={
 316     0xff, 0xff, 0xff, 0xff, 0x07, 0xf0, 0xfb, 0xef, 0xdb, 0xed, 0x8b, 0xe8,
 317     0x1b, 0xec, 0x3b, 0xee, 0x1b, 0xec, 0x8b, 0xe8, 0xdb, 0xed, 0xfb, 0xef,
 318     0x07, 0xf0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 319
 320
 321 IMPLEMENT_DYNAMIC_CLASS(wxMiniFrame,wxFrame)
 322
 323 bool wxMiniFrame::Create( wxWindow *parent, wxWindowID id, const wxString &title,
 324       const wxPoint &pos, const wxSize &size,
 325       long style, const wxString &name )
 326 {
 327     style = style | wxCAPTION;
 328
 329     if ((style & wxCAPTION) || (style & wxTINY_CAPTION_HORIZ) || (style & wxTINY_CAPTION_VERT))
 330         m_miniTitle = 16;
 331
 332     if (style & wxRESIZE_BORDER)
 333         m_miniEdge = 4;
 334     else
 335         m_miniEdge = 3;
 336     m_isDragging = false;
 337     m_oldX = -1;
 338     m_oldY = -1;
 339     m_diffX = 0;
 340     m_diffY = 0;
 341
 342     wxFrame::Create( parent, id, title, pos, size, style, name );
 343
 344     if (m_parent && (GTK_IS_WINDOW(m_parent->m_widget)))
 345     {
 346         gtk_window_set_transient_for( GTK_WINDOW(m_widget), GTK_WINDOW(m_parent->m_widget) );
 347     }
 348
 349     if ((style & wxCLOSE_BOX) &&
 350         ((style & wxCAPTION) || (style & wxTINY_CAPTION_HORIZ) || (style & wxTINY_CAPTION_VERT)))
 351     {
 352         wxImage img = wxBitmap((const char*)close_bits, 16, 16).ConvertToImage();
 353         img.Replace(0,0,0,123,123,123);
 354         img.SetMaskColour(123,123,123);
 355         m_closeButton = wxBitmap( img );
 356     }
 357
 358     /* these are called when the borders are drawn */
 359     g_signal_connect (m_mainWidget, "expose_event",
 360                       G_CALLBACK (gtk_window_own_expose_callback), this );
 361
 362     /* these are required for dragging the mini frame around */
 363     g_signal_connect (m_mainWidget, "button_press_event",
 364                       G_CALLBACK (gtk_window_button_press_callback), this);
 365     g_signal_connect (m_mainWidget, "button_release_event",
 366                       G_CALLBACK (gtk_window_button_release_callback), this);
 367     g_signal_connect (m_mainWidget, "motion_notify_event",
 368                       G_CALLBACK (gtk_window_motion_notify_callback), this);
 369     g_signal_connect (m_mainWidget, "leave_notify_event",
 370                       G_CALLBACK (gtk_window_leave_callback), this);
 371     return true;
 372 }
 373
 374 void wxMiniFrame::SetTitle( const wxString &title )
 375 {
 376     wxFrame::SetTitle( title );
 377
 378     if (GTK_PIZZA(m_mainWidget)->bin_window)
 379         gdk_window_invalidate_rect( GTK_PIZZA(m_mainWidget)->bin_window, NULL, true );
 380 }
 381
 382 #endif // wxUSE_MINIFRAME