zoomedit: Added room selection and hover effect.

draw.c

@@ -97,7 +97,7 @@ gboolean drawTopView(GtkWidget *widget, GdkEventExpose *event, gpointer data) {
   int i;
   
   
-  if(getLevel() == NULL) return;
+  if(getLevel() == NULL) return FALSE;
   
   if(pixmap == NULL || lastImageWidth != getImageWidth() || lastImageHeight != getImageHeight() ||
      lastWidth != widget->allocation.width || lastHeight != widget->allocation.height || repaint) 
@@ -148,7 +148,7 @@ gboolean drawTopView(GtkWidget *widget, GdkEventExpose *event, gpointer data) {
       cairo_fill_preserve(cr);
     
       cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 0.9);
-      cairo_set_line_width(cr, 1.5/scale);
+      cairo_set_line_width(cr, 2.0/scale);
       cairo_stroke(cr);
     }
     
@@ -157,6 +157,23 @@ gboolean drawTopView(GtkWidget *widget, GdkEventExpose *event, gpointer data) {
   
   gdk_draw_drawable(GDK_DRAWABLE(widget->window), widget->style->fg_gc[GTK_WIDGET_STATE(widget)], GDK_DRAWABLE(pixmap), 0, 0, 0, 0, -1, -1);
   
+  if(getHoveredRoom() != NULL && getHoveredRoom() != getActiveRoom()) {
+    cr = gdk_cairo_create(GDK_DRAWABLE(widget->window));
+    
+    cairo_translate(cr, getImageWidth()/2-xTranslate, getImageHeight()/2-yTranslate);
+    cairo_scale(cr, scale, scale);
+    
+    cairo_set_line_width(cr, 2.0/scale);
+    cairo_set_line_join(cr, CAIRO_LINE_JOIN_MITER);
+    
+    room2path(cr, getHoveredRoom(), NULL);
+    
+    cairo_set_source_rgba(cr, 0.0, 0.7, 1.0, 0.7);
+    cairo_stroke(cr);
+    
+    cairo_destroy (cr);
+  }
+  
   return FALSE;
 }
 

edit.c

@@ -4,6 +4,7 @@
 static int editMode = EDIT_MODE_VIEW;
 
 static ROOM *activeRoom = NULL;
+static ROOM *hoveredRoom = NULL;
 
 int getEditMode() {
   return editMode;
@@ -20,3 +21,11 @@ void setActiveRoom(ROOM *room) {
   if(editMode == EDIT_MODE_VIEW || editMode == EDIT_MODE_SELECTED)
     editMode = (room == NULL) ? EDIT_MODE_VIEW : EDIT_MODE_SELECTED;
 }
+
+ROOM *getHoveredRoom() {
+  return hoveredRoom;
+}
+
+void setHoveredRoom(ROOM *room) {
+  hoveredRoom = room;
+}

edit.h

@@ -12,4 +12,7 @@ int getEditMode();
 ROOM *getActiveRoom();
 void setActiveRoom(ROOM *room);
 
+ROOM *getHoveredRoom();
+void setHoveredRoom(ROOM *room);
+
 #endif /*EDIT_H_*/

geometry.c

@@ -140,8 +140,11 @@ int lineIntersection(const LINE *la, const LINE *lb, VERTEX *v) {
   double xb2 = lb->v2.x, yb2 = lb->v2.y;
   double temp;
   int switched = 0;
+  VERTEX v2;
   
   
+  if(v == NULL) v = &v2;
+  
   if(xa1 == xa2 && ya1 == ya2) return INTERSECTION_ERROR;
   if(xb1 == xb2 && yb1 == yb2) return INTERSECTION_ERROR;
   
@@ -227,6 +230,21 @@ int lineRectIntersections(const LINE *line, const RECTANGLE *rect, int edge, VER
   return ret;
 }
 
+gboolean linePolygonIntersection(const LINE *l, const POLYGON *p) {
+  int i;
+  LINE line;
+  
+  for(i = 0; i < p->nVertices; i++) {
+    line.v1 = p->vertices[i];
+    line.v2 = p->vertices[(i+1)%p->nVertices];
+    
+    if(lineIntersection(l, &line, NULL) == INTERSECTION_SEGMENT_SEGMENT)
+      return TRUE;
+  }
+  
+  return FALSE;
+}
+
 void simplifyPolygon(const POLYGON *in, const RECTANGLE *rect, POLYGON *out) {
   int i, j;
   int a;

geometry.h

@@ -49,6 +49,7 @@ gboolean vertexInPolygon(const VERTEX *v, const POLYGON *p);
 int lineIntersection(const LINE *la, const LINE *lb, VERTEX *v);
 int lineRectIntersection(const LINE *l, const RECTANGLE *rect, int edge, VERTEX *v);
 int lineRectIntersections(const LINE *line, const RECTANGLE *rect, int edge, VERTEX *v1, VERTEX *v2);
+gboolean linePolygonIntersection(const LINE *l, const POLYGON *p);
 void simplifyPolygon(const POLYGON *in, const RECTANGLE *rect, POLYGON *out);
 
 #endif /*GEOMETRY_H_*/

window.c

@@ -55,6 +55,67 @@ static gboolean buttonEvent(GtkWidget *widget, GdkEventButton *event, gpointer u
   return FALSE;
 }
 
+gboolean crossingNotifyEvent(GtkWidget *widget, GdkEventCrossing *event, gpointer user_data) {
+  int i;
+  VERTEX v;
+  
+  
+  setHoveredRoom(NULL);
+  
+  if(event->type == GDK_ENTER_NOTIFY) {
+    v.x = event->x;
+    v.y = event->y;
+    
+    viewToImage(&v);
+  
+    
+    for(i = 0; i < getLevel()->nRooms; i++) {
+      if(vertexInPolygon(&v, &getLevel()->rooms[i])) {
+        setHoveredRoom(&getLevel()->rooms[i]);
+        
+        break;
+      }
+    }
+  }
+  
+  gtk_widget_queue_draw(drawingArea);
+}
+
+gboolean motionNotifyEvent(GtkWidget *widget, GdkEventMotion *event, gpointer user_data) {
+  int i;
+  static VERTEX v, v_last = {0, 0};
+  LINE line;
+  gboolean changed = FALSE;
+  
+  v.x = event->x;
+  v.y = event->y;
+  
+  viewToImage(&v);
+  
+  line.v1 = v_last;
+  line.v2 = v;
+  
+  for(i = 0; i < getLevel()->nRooms; i++) {
+    if(linePolygonIntersection(&line, &getLevel()->rooms[i])) {
+      if(vertexInPolygon(&v, &getLevel()->rooms[i])) {
+        setHoveredRoom(&getLevel()->rooms[i]);
+        changed = TRUE;
+        
+        break;
+      }
+      else {
+        setHoveredRoom(NULL);
+        changed = TRUE;
+      }
+    }
+  }
+  
+  if(changed)
+    gtk_widget_queue_draw(drawingArea);
+  
+  v_last = v;
+}
+
 static void destroy(GtkWidget *widget, gpointer data) {
   gtk_main_quit();
 }
@@ -110,7 +171,7 @@ static void updateScrollbarsCentered() {
 }
 
 GtkWidget* createMainWindow() {
-  GtkWidget *window, *vbox, *menubar, *toolbar, *table, *vScroll, *hScroll;
+  GtkWidget *window, *vbox, *menubar, *toolbar, *hPaned, *table, *vScroll, *hScroll, *sidebar;
   GdkColor color = {0, 0, 0, 0};
   
   
@@ -130,8 +191,11 @@ GtkWidget* createMainWindow() {
   
   gtk_window_add_accel_group(GTK_WINDOW(window), getAccels());
   
+  hPaned = gtk_hpaned_new();
+  gtk_box_pack_end(GTK_BOX(vbox), hPaned, TRUE, TRUE, 0);
+  
   table = gtk_table_new(2, 2, FALSE);
-  gtk_box_pack_end(GTK_BOX(vbox), table, TRUE, TRUE, 0);
+  gtk_paned_pack1(GTK_PANED(hPaned), table, TRUE, TRUE);
   
   drawingArea = gtk_drawing_area_new();
   gtk_widget_modify_bg(drawingArea, GTK_WIDGET_STATE(drawingArea), &color);
@@ -139,8 +203,12 @@ GtkWidget* createMainWindow() {
   g_signal_connect(G_OBJECT(drawingArea), "expose-event", G_CALLBACK(drawTopView), NULL);
   g_signal_connect(G_OBJECT(drawingArea), "button-press-event", G_CALLBACK(buttonEvent), NULL);
   g_signal_connect(G_OBJECT(drawingArea), "button-release-event", G_CALLBACK(buttonEvent), NULL);
+  g_signal_connect(G_OBJECT(drawingArea), "enter-notify-event", G_CALLBACK(crossingNotifyEvent), NULL);
+  g_signal_connect(G_OBJECT(drawingArea), "leave-notify-event", G_CALLBACK(crossingNotifyEvent), NULL);
+  g_signal_connect(G_OBJECT(drawingArea), "motion-notify-event", G_CALLBACK(motionNotifyEvent), NULL);
   g_signal_connect(G_OBJECT(drawingArea), "scroll-event", G_CALLBACK(scrollEvent), NULL);
-  gtk_widget_add_events(drawingArea, GDK_SCROLL_MASK);
+  gtk_widget_add_events(drawingArea, GDK_SCROLL_MASK | GDK_POINTER_MOTION_MASK | GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK);
+  gtk_widget_set_double_buffered(drawingArea, FALSE);
   gtk_table_attach(GTK_TABLE(table), drawingArea, 0, 1, 0, 1, GTK_FILL|GTK_EXPAND|GTK_SHRINK, GTK_FILL|GTK_EXPAND|GTK_SHRINK, 0, 0);
   
   hAdjustment = GTK_ADJUSTMENT(gtk_adjustment_new(0, 0, 0, 10, 100, 100));
@@ -153,6 +221,9 @@ GtkWidget* createMainWindow() {
   g_signal_connect(G_OBJECT(vScroll), "value-changed", G_CALLBACK(refreshScrolling), NULL);
   gtk_table_attach(GTK_TABLE(table), vScroll, 1, 2, 0, 1, 0, GTK_FILL|GTK_EXPAND|GTK_SHRINK, 0, 0);
   
+  sidebar = gtk_vbox_new(FALSE, 0);
+  gtk_paned_pack2(GTK_PANED(hPaned), sidebar, FALSE, TRUE);
+  
   gtk_widget_show_all(vbox);
   
   return window;