Make The LEDs clickable

editor/Makefile

@@ -1,7 +1,7 @@
 CC=gcc
 CFLAGS=-Wall
 LINKER_FLAGS=-lglut -export-dynamic
-GTKLIBS=`pkg-config --cflags --libs gtkglext-1.0 libglade-2.0 gmodule-export-2.0`
+GTKLIBS=`pkg-config --cflags --libs gtk+-2.0 gtkglext-1.0 libglade-2.0 gmodule-export-2.0`
 SRCDIR=src
 
 all:
@@ -16,5 +16,5 @@ all:
 clean:
 	rm -f *.o
 	rm -f gui
-	#rm -f ledcube-edit
+	rm -f ledcube-edit
 

editor/src/display.c

@@ -79,7 +79,7 @@ void setScene() {
 }
 
 // OpenGL Display function
-void display() {
+void display(gboolean onlyForPicking) {
   glClearColor(0.0, 0.0, 0.0, 1.0);
   glShadeModel(GL_SMOOTH);
 
@@ -92,13 +92,8 @@ void display() {
   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
   setScene();
-  drawWires();
-  drawLEDs(RENDER_MODE);
-}
 
-// Picking function
-void displayPickingObjects() {
-  setScene();
+  if (onlyForPicking == TRUE) {
     glDisable(GL_DITHER);
     glDisable(GL_LIGHTING);
 
@@ -106,5 +101,9 @@ void displayPickingObjects() {
 
     glEnable(GL_LIGHTING);
     glEnable(GL_DITHER);
+  } else {
+    drawWires();
+    drawLEDs(RENDER_MODE);
+  }
 }
 

editor/src/display.h

@@ -4,8 +4,7 @@
 void drawLEDs(int mode);
 void drawWires();
 
-void display();
-void displayPickingObjects();
+void display(gboolean onlyForPicking);
 
 void setScene();
 

editor/src/event_callbacks.c

@@ -30,13 +30,14 @@ gboolean on_drawing_area_expose_event(GtkWidget *widget, GdkEventExpose *event,
   if (!gdk_gl_drawable_gl_begin(glDrawable, glContext)) return FALSE;
   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
-  display();
+  display(FALSE);
 
   if (gdk_gl_drawable_is_double_buffered(glDrawable))
     gdk_gl_drawable_swap_buffers(glDrawable);
   else
     glFlush();
   gdk_gl_drawable_gl_end(glDrawable);
+
   return FALSE;
 }
 
@@ -44,7 +45,6 @@ void on_drawing_area_realize(GtkWidget *widget, gpointer data) {
   GdkGLContext *glContext = gtk_widget_get_gl_context(widget);
   GdkGLDrawable *glDrawable = gtk_widget_get_gl_drawable(widget);
   if (!gdk_gl_drawable_gl_begin(glDrawable, glContext)) return;
-
   gdk_gl_drawable_gl_end(glDrawable);
 }
 
@@ -67,3 +67,23 @@ void on_drawing_area_key_press_event(GtkWidget *widget, GdkEventKey *event) {
   gtk_widget_queue_draw_area(widget, 0, 0, WINDOW_WIDTH, WINDOW_HEIGHT);
 }
 
+void on_drawing_area_button_press_event(GtkWidget *widget, gpointer data) {
+  gtk_widget_grab_focus(widget);
+
+  GdkGLContext *glContext = gtk_widget_get_gl_context(widget);
+  GdkGLDrawable *glDrawable =gtk_widget_get_gl_drawable(widget);
+
+  if (!gdk_gl_drawable_gl_begin(glDrawable, glContext)) return;
+  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+
+
+  gint x, y;
+  gtk_widget_get_pointer(widget, &x, &y);
+  
+  display(TRUE);
+  mouse(x, y);
+
+  gdk_gl_drawable_gl_end(glDrawable);
+  gtk_widget_queue_draw_area(widget, 0, 0, WINDOW_WIDTH, WINDOW_HEIGHT);
+}
+

editor/src/input.c

@@ -23,13 +23,10 @@ void moveCameraAngle(float angle) {
   if (eyeAngle < 0) eyeAngle = 0;
 }
 
-void mouse(int button, int state, int x, int y) {
-  if (button == GLUT_LEFT_BUTTON && state == GLUT_DOWN) {
+void mouse(int x, int y) {
   int position, viewport[4];
   GLubyte pixel[3];
 
-    displayPickingObjects();
-
   glGetIntegerv(GL_VIEWPORT, viewport);
   glReadPixels(x, viewport[3]-y, 1, 1, GL_RGB, GL_UNSIGNED_BYTE, (void*)pixel);
   position = ((int)pixel[2]/8)-1; // Selected LED
@@ -37,9 +34,5 @@ void mouse(int button, int state, int x, int y) {
   printf("%d\n", position);
   currentFrame[position] = currentFrame[position] == 0 ? 1 : 0;
   printf("%d\n", currentFrame[position]);
-
-    // FIXME: Redraw the gl-container
-    //display();
-  }
 }
 

editor/src/input.h

@@ -4,7 +4,7 @@
 void moveCameraPosition(float direction);
 void moveCameraAngle(float angle);
 
-void mouse(int button, int state, int x, int y);
+void mouse(int x, int y);
 
 #endif
 

editor/src/main.c

@@ -12,6 +12,8 @@
 #include "input.h"
 #include "event_callbacks.c"
 
+// TODO: Refactor to GLib-Datatypes (page 747)
+
 // Materials
 float ledOnMaterial[] = {0.0, 0.0, 1.0, 1.0};
 float ledOffMaterial[] = {0.1, 0.1, 0.1, 0.0};
@@ -57,10 +59,10 @@ int main(int argc, char *argv[]) {
   // Configure the OpenGL widget
   glConfig = gdk_gl_config_new_by_mode(GDK_GL_MODE_RGB | GDK_GL_MODE_DEPTH | GDK_GL_MODE_DOUBLE);
   if (glConfig == NULL) {
-    g_print("EEE Double buffer not available, trying single buffer.");
+    g_warning("EEE Double buffer not available, trying single buffer.");
     glConfig = gdk_gl_config_new_by_mode(GDK_GL_MODE_RGB | GDK_GL_MODE_DEPTH);
     if (glConfig == NULL) {
-      g_print("EEE Sorry, can't configure the OpenGL window. Giving up.");
+      g_error("EEE Sorry, can't configure the OpenGL window. Giving up.");
       exit(1);
     }
   }

editor/src/main_gui.glade

@@ -90,8 +90,9 @@
             <property name="height_request">500</property>
             <property name="visible">True</property>
             <property name="can_focus">True</property>
-            <property name="events">GDK_EXPOSURE_MASK | GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK | GDK_FOCUS_CHANGE_MASK | GDK_STRUCTURE_MASK</property>
+            <property name="events">GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK | GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK | GDK_FOCUS_CHANGE_MASK | GDK_STRUCTURE_MASK</property>
             <signal name="expose_event" handler="on_drawing_area_expose_event"/>
+            <signal name="button_press_event" handler="on_drawing_area_button_press_event"/>
             <signal name="key_press_event" handler="on_drawing_area_key_press_event"/>
             <signal name="realize" handler="on_drawing_area_realize" after="yes"/>
             <signal name="configure_event" handler="on_drawing_area_configure_event" after="yes"/>