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 #include "wx/settings.h"
  17
  18 #ifndef WX_PRECOMP
  19     #include "wx/dcscreen.h"
  20 #endif
  21
  22 #include "gtk/gtk.h"
  23 #include "wx/gtk/win_gtk.h"
  24 #include "wx/gtk/private.h"
  25
  26 #include <gdk/gdk.h>
  27 #include <gdk/gdkprivate.h>
  28 #include <gdk/gdkx.h>
  29
  30 //-----------------------------------------------------------------------------
  31 // data
  32 //-----------------------------------------------------------------------------
  33
  34 extern bool        g_blockEventsOnDrag;
  35 extern bool        g_blockEventsOnScroll;
  36 extern GtkWidget  *wxGetRootWindow();
  37
  38 //-----------------------------------------------------------------------------
  39 // "expose_event" of m_mainWidget
  40 //-----------------------------------------------------------------------------
  41
  42 // StepColour() it a utility function that simply darkens
  43 // or lightens a color, based on the specified percentage
  44 static wxColor StepColour(const wxColor& c, int percent)
  45 {
  46     int r = c.Red(), g = c.Green(), b = c.Blue();
  47     return wxColour((unsigned char)wxMin((r*percent)/100,255),
  48                     (unsigned char)wxMin((g*percent)/100,255),
  49                     (unsigned char)wxMin((b*percent)/100,255));
  50 }
  51
  52 static wxColor LightContrastColour(const wxColour& c)
  53 {
  54     int amount = 120;
  55
  56     // if the color is especially dark, then
  57     // make the contrast even lighter
  58     if (c.Red() < 128 && c.Green() < 128 && c.Blue() < 128)
  59         amount = 160;
  60
  61     return StepColour(c, amount);
  62 }
  63
  64 extern "C" {
  65 static void gtk_window_own_expose_callback( GtkWidget *widget, GdkEventExpose *gdk_event, wxMiniFrame *win )
  66 {
  67     if (g_isIdle) wxapp_install_idle_handler();
  68
  69     if (!win->m_hasVMT) return;
  70     if (gdk_event->count > 0) return;
  71
  72     GtkPizza *pizza = GTK_PIZZA(widget);
  73
  74     gtk_paint_shadow (widget->style,
  75                       pizza->bin_window,
  76                       GTK_STATE_NORMAL,
  77                       GTK_SHADOW_OUT,
  78                       NULL, NULL, NULL, // FIXME: No clipping?
  79                       0, 0,
  80                       win->m_width, win->m_height);
  81
  82     int style = win->GetWindowStyle();
  83
  84     wxClientDC dc(win);
  85     // Hack alert
  86     dc.m_window = pizza->bin_window;
  87
  88     if (style & wxRESIZE_BORDER)
  89     {
  90         dc.SetBrush( *wxGREY_BRUSH );
  91         dc.SetPen( *wxTRANSPARENT_PEN );
  92         dc.DrawRectangle( win->m_width - 14, win->m_height-14, 14, 14 );
  93     }
  94
  95     if (!win->GetTitle().empty() &&
  96         ((style & wxCAPTION) ||
  97          (style & wxTINY_CAPTION_HORIZ) ||
  98          (style & wxTINY_CAPTION_VERT)))
  99     {
 100         dc.SetFont( *wxSMALL_FONT );
 101         int height = dc.GetCharHeight();
 102
 103         wxBrush brush( LightContrastColour( wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHT) ) );
 104         dc.SetBrush( brush );
 105         dc.SetPen( *wxTRANSPARENT_PEN );
 106         dc.DrawRectangle( 3, 3, win->m_width - 7, height-2 );
 107
 108         dc.SetTextForeground( *wxWHITE );
 109         dc.DrawText( win->GetTitle(), 6, 3 );
 110
 111         if (style & wxCLOSE_BOX)
 112             dc.DrawBitmap( win->m_closeButton, win->m_width-19, 3, true );
 113     }
 114 }
 115 }
 116
 117 //-----------------------------------------------------------------------------
 118 // "button_press_event" of m_mainWidget
 119 //-----------------------------------------------------------------------------
 120
 121 extern "C" {
 122 static gint gtk_window_button_press_callback( GtkWidget *widget, GdkEventButton *gdk_event, wxMiniFrame *win )
 123 {
 124     if (g_isIdle) wxapp_install_idle_handler();
 125
 126     if (!win->m_hasVMT) return FALSE;
 127     if (g_blockEventsOnDrag) return TRUE;
 128     if (g_blockEventsOnScroll) return TRUE;
 129
 130     if (win->m_isDragging) return TRUE;
 131
 132     GtkPizza *pizza = GTK_PIZZA(widget);
 133     if (gdk_event->window != pizza->bin_window) return TRUE;
 134
 135     int style = win->GetWindowStyle();
 136
 137     int y = (int)gdk_event->y;
 138     int x = (int)gdk_event->x;
 139
 140     if ((style & wxRESIZE_BORDER) &&
 141         (x > win->m_width-14) && (y > win->m_height-14))
 142     {
 143         GtkWidget *ancestor = gtk_widget_get_toplevel( widget );
 144
 145         GdkWindow *source = GTK_PIZZA(widget)->bin_window;
 146
 147         int org_x = 0;
 148         int org_y = 0;
 149         gdk_window_get_origin( source, &org_x, &org_y );
 150
 151         gtk_window_begin_resize_drag (GTK_WINDOW (ancestor),
 152                                   GDK_WINDOW_EDGE_SOUTH_EAST,
 153                                   1,
 154                                   org_x + x,
 155                                   org_y + y,
 156                                   0);
 157
 158         return TRUE;
 159     }
 160
 161     if ((style & wxCLOSE_BOX) &&
 162         ((style & wxCAPTION) || (style & wxTINY_CAPTION_HORIZ) || (style & wxTINY_CAPTION_VERT)))
 163     {
 164         if ((y > 3) && (y < 19) && (x > win->m_width-19) && (x < win->m_width-3))
 165         {
 166             win->Close();
 167             return TRUE;
 168         }
 169     }
 170
 171     wxClientDC dc(win);
 172     dc.SetFont( *wxSMALL_FONT );
 173     int height = dc.GetCharHeight() + 1;
 174
 175
 176     if (y > height) return TRUE;
 177
 178     gdk_window_raise( win->m_widget->window );
 179
 180     gdk_pointer_grab( widget->window, FALSE,
 181                       (GdkEventMask)
 182                          (GDK_BUTTON_PRESS_MASK |
 183                           GDK_BUTTON_RELEASE_MASK |
 184                           GDK_POINTER_MOTION_MASK        |
 185                           GDK_POINTER_MOTION_HINT_MASK  |
 186                           GDK_BUTTON_MOTION_MASK        |
 187                           GDK_BUTTON1_MOTION_MASK),
 188                       (GdkWindow *) NULL,
 189                       (GdkCursor *) NULL,
 190                       (unsigned int) GDK_CURRENT_TIME );
 191
 192     win->m_diffX = x;
 193     win->m_diffY = y;
 194     win->m_oldX = 0;
 195     win->m_oldY = 0;
 196
 197     win->m_isDragging = true;
 198
 199     return TRUE;
 200 }
 201 }
 202
 203 //-----------------------------------------------------------------------------
 204 // "button_release_event" of m_mainWidget
 205 //-----------------------------------------------------------------------------
 206
 207 extern "C" {
 208 static gint gtk_window_button_release_callback( GtkWidget *widget, GdkEventButton *gdk_event, wxMiniFrame *win )
 209 {
 210     if (g_isIdle) wxapp_install_idle_handler();
 211
 212     if (!win->m_hasVMT) return FALSE;
 213     if (g_blockEventsOnDrag) return TRUE;
 214     if (g_blockEventsOnScroll) return TRUE;
 215
 216     if (!win->m_isDragging) return TRUE;
 217
 218     win->m_isDragging = false;
 219
 220     int x = (int)gdk_event->x;
 221     int y = (int)gdk_event->y;
 222
 223     gdk_pointer_ungrab ( (guint32)GDK_CURRENT_TIME );
 224     int org_x = 0;
 225     int org_y = 0;
 226     gdk_window_get_origin( widget->window, &org_x, &org_y );
 227     x += org_x - win->m_diffX;
 228     y += org_y - win->m_diffY;
 229     win->m_x = x;
 230     win->m_y = y;
 231     gtk_window_move( GTK_WINDOW(win->m_widget), x, y );
 232
 233     return TRUE;
 234 }
 235 }
 236
 237 //-----------------------------------------------------------------------------
 238 // "leave_notify_event" of m_mainWidget
 239 //-----------------------------------------------------------------------------
 240
 241 extern "C" {
 242 static gboolean
 243 gtk_window_leave_callback( GtkWidget *widget, GdkEventCrossing *gdk_event, wxMiniFrame *win )
 244 {
 245     if (g_isIdle)
 246         wxapp_install_idle_handler();
 247
 248     if (!win->m_hasVMT) return FALSE;
 249     if (g_blockEventsOnDrag) return FALSE;
 250
 251     gdk_window_set_cursor( widget->window, NULL );
 252
 253     return FALSE;
 254 }
 255 }
 256
 257 //-----------------------------------------------------------------------------
 258 // "motion_notify_event" of m_mainWidget
 259 //-----------------------------------------------------------------------------
 260
 261 extern "C" {
 262 static gint
 263 gtk_window_motion_notify_callback( GtkWidget *widget, GdkEventMotion *gdk_event, wxMiniFrame *win )
 264 {
 265     if (g_isIdle)
 266         wxapp_install_idle_handler();
 267
 268     if (!win->m_hasVMT) return FALSE;
 269     if (g_blockEventsOnDrag) return TRUE;
 270     if (g_blockEventsOnScroll) return TRUE;
 271
 272     if (gdk_event->is_hint)
 273     {
 274        int x = 0;
 275        int y = 0;
 276        GdkModifierType state;
 277        gdk_window_get_pointer(gdk_event->window, &x, &y, &state);
 278        gdk_event->x = x;
 279        gdk_event->y = y;
 280        gdk_event->state = state;
 281     }
 282
 283     int style = win->GetWindowStyle();
 284
 285     int x = (int)gdk_event->x;
 286     int y = (int)gdk_event->y;
 287
 288     if (!win->m_isDragging)
 289     {
 290         if (style & wxRESIZE_BORDER)
 291         {
 292             if ((x > win->m_width-14) && (y > win->m_height-14))
 293                gdk_window_set_cursor( widget->window, gdk_cursor_new( GDK_BOTTOM_RIGHT_CORNER ) );
 294             else
 295                gdk_window_set_cursor( widget->window, NULL );
 296         }
 297         return TRUE;
 298     }
 299
 300     win->m_oldX = x - win->m_diffX;
 301     win->m_oldY = y - win->m_diffY;
 302
 303     int org_x = 0;
 304     int org_y = 0;
 305     gdk_window_get_origin( widget->window, &org_x, &org_y );
 306     x += org_x - win->m_diffX;
 307     y += org_y - win->m_diffY;
 308     win->m_x = x;
 309     win->m_y = y;
 310     gtk_window_move( GTK_WINDOW(win->m_widget), x, y );
 311
 312
 313     return TRUE;
 314 }
 315 }
 316
 317 //-----------------------------------------------------------------------------
 318 // wxMiniFrame
 319 //-----------------------------------------------------------------------------
 320
 321 static unsigned char close_bits[]={
 322     0xff, 0xff, 0xff, 0xff, 0x07, 0xf0, 0xfb, 0xef, 0xdb, 0xed, 0x8b, 0xe8,
 323     0x1b, 0xec, 0x3b, 0xee, 0x1b, 0xec, 0x8b, 0xe8, 0xdb, 0xed, 0xfb, 0xef,
 324     0x07, 0xf0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 325
 326
 327 IMPLEMENT_DYNAMIC_CLASS(wxMiniFrame,wxFrame)
 328
 329 bool wxMiniFrame::Create( wxWindow *parent, wxWindowID id, const wxString &title,
 330       const wxPoint &pos, const wxSize &size,
 331       long style, const wxString &name )
 332 {
 333     style = style | wxCAPTION;
 334
 335     if ((style & wxCAPTION) || (style & wxTINY_CAPTION_HORIZ) || (style & wxTINY_CAPTION_VERT))
 336         m_miniTitle = 16;
 337
 338     if (style & wxRESIZE_BORDER)
 339         m_miniEdge = 4;
 340     else
 341         m_miniEdge = 3;
 342     m_isDragging = false;
 343     m_oldX = -1;
 344     m_oldY = -1;
 345     m_diffX = 0;
 346     m_diffY = 0;
 347
 348     wxFrame::Create( parent, id, title, pos, size, style, name );
 349
 350     if (m_parent && (GTK_IS_WINDOW(m_parent->m_widget)))
 351     {
 352         gtk_window_set_transient_for( GTK_WINDOW(m_widget), GTK_WINDOW(m_parent->m_widget) );
 353     }
 354
 355     if ((style & wxCLOSE_BOX) &&
 356         ((style & wxCAPTION) || (style & wxTINY_CAPTION_HORIZ) || (style & wxTINY_CAPTION_VERT)))
 357     {
 358         wxImage img = wxBitmap((const char*)close_bits, 16, 16).ConvertToImage();
 359         img.Replace(0,0,0,123,123,123);
 360         img.SetMaskColour(123,123,123);
 361         m_closeButton = wxBitmap( img );
 362     }
 363
 364     /* these are called when the borders are drawn */
 365     g_signal_connect (m_mainWidget, "expose_event",
 366                       G_CALLBACK (gtk_window_own_expose_callback), this );
 367
 368     /* these are required for dragging the mini frame around */
 369     g_signal_connect (m_mainWidget, "button_press_event",
 370                       G_CALLBACK (gtk_window_button_press_callback), this);
 371     g_signal_connect (m_mainWidget, "button_release_event",
 372                       G_CALLBACK (gtk_window_button_release_callback), this);
 373     g_signal_connect (m_mainWidget, "motion_notify_event",
 374                       G_CALLBACK (gtk_window_motion_notify_callback), this);
 375     g_signal_connect (m_mainWidget, "leave_notify_event",
 376                       G_CALLBACK (gtk_window_leave_callback), this);
 377     return true;
 378 }
 379
 380 void wxMiniFrame::SetTitle( const wxString &title )
 381 {
 382     wxFrame::SetTitle( title );
 383
 384     if (GTK_PIZZA(m_mainWidget)->bin_window)
 385         gdk_window_invalidate_rect( GTK_PIZZA(m_mainWidget)->bin_window, NULL, true );
 386 }
 387
 388 #endif // wxUSE_MINIFRAME