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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,149 @@ | ||
| #include "drawing.h" | ||
| #include <cstdio> | ||
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| typedef struct { | ||
| GtkWidget *draw_area1; | ||
| double x; | ||
| double y; | ||
| }MousePos; | ||
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| static cairo_surface_t *surface=cairo_image_surface_create(CAIRO_FORMAT_ARGB32,640,360); | ||
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| //static double start_x,start_y; | ||
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| static void clear_surface (void) | ||
| { | ||
| cairo_t *cr; | ||
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| cr = cairo_create (surface); | ||
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| cairo_set_source_rgb (cr, 1, 1, 1); | ||
| cairo_paint (cr); | ||
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| cairo_destroy (cr); | ||
| } | ||
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| /* | ||
| static void resize_cb(GtkWidget *widget,int width,int height,gpointer data){ | ||
| cairo_surface_destroy (surface); | ||
| cairo_surface_create_similar(surface,CAIRO_CONTENT_COLOR,width,height); | ||
| }*/ | ||
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| static gboolean draw_cb(GtkWidget *widget,cairo_t *cr,gpointer data){ | ||
| cairo_set_source_surface(cr,surface,0,0); | ||
| cairo_paint(cr); | ||
| //Set Color | ||
| /*guint width, height; | ||
| width = gtk_widget_get_allocated_width (widget); | ||
| height = gtk_widget_get_allocated_height (widget); | ||
| cairo_arc (cr, | ||
| width / 2.0, height / 2.0, | ||
| MIN (width, height) / 2.0, | ||
| 0, 2 * G_PI); | ||
| cairo_fill(cr);*/ | ||
| return FALSE; | ||
| } | ||
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| static void draw_brush(GtkWidget *widget,double x,double y){ | ||
| cairo_t *cr; | ||
| //Draw on the surface | ||
| cr=cairo_create(surface); | ||
| //Some bugs in color set | ||
| GdkRGBA color; | ||
| //Draw and fill in color | ||
| cairo_arc(cr,x,y,3,0,2*G_PI); | ||
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| //gdk_rgba_parse(&color,"66CCFF"); | ||
| //gdk_cairo_set_source_rgba(cr,&color); | ||
| cairo_fill(cr); | ||
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| cairo_destroy(cr); | ||
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| gtk_widget_queue_draw(widget); | ||
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| } | ||
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| static void drag_begin(GtkGesture *gesture,double x,double y,MousePos *pos){ | ||
| pos->x=x; | ||
| pos->y=y; | ||
| draw_brush(pos->draw_area1,x,y); | ||
| /* | ||
| freopen("drag.txt","a",stdout); | ||
| g_print("%lf %lf\n",x,y); | ||
| fclose(stdout); | ||
| */ | ||
| } | ||
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| static void drag_update(GtkGesture *gesture,double x,double y,MousePos *pos){ | ||
| draw_brush(pos->draw_area1,x+pos->x,y+pos->y); | ||
| /* | ||
| freopen("drag.txt","a",stdout); | ||
| g_print("%lf %lf\n",x+pos->x,y+pos->y); | ||
| fclose(stdout); | ||
| */ | ||
| } | ||
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| static void drag_end(GtkGesture *gesture,double x,double y,MousePos *pos){ | ||
| draw_brush(pos->draw_area1,x+pos->x,y+pos->y); | ||
| /* | ||
| freopen("drag.txt","a",stdout); | ||
| g_print("%lf %lf\n",x+pos->x,y+pos->y); | ||
| fclose(stdout); | ||
| */ | ||
| } | ||
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| static void pressed(GtkGestureMultiPress *gesture,int n_press,double x,double y,GtkWidget *widget){ | ||
| clear_surface(); | ||
| gtk_widget_queue_draw(widget); | ||
| /* | ||
| g_print("%d\n",n_press); | ||
| freopen("drag.txt","w",stdout); | ||
| printf("\0"); | ||
| fclose(stdout); | ||
| */ | ||
| } | ||
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| static void close_window(void){ | ||
| if(surface){ | ||
| cairo_surface_destroy(surface); | ||
| } | ||
| } | ||
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| void drawing_main(GtkWidget *widget,GtkWindow *parent){ | ||
| GtkWidget *window,*draw_area; | ||
| GtkGesture *press,*drag; | ||
| //Create a window | ||
| window=gtk_window_new(GTK_WINDOW_TOPLEVEL); | ||
| gtk_window_set_transient_for(GTK_WINDOW(window),parent); | ||
| gtk_window_set_title(GTK_WINDOW(window),"Drawing Test"); | ||
| gtk_window_set_default_size(GTK_WINDOW(window),640,360); | ||
| gtk_window_set_icon_name(GTK_WINDOW(window),"org.gtk.daleclack"); | ||
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| g_signal_connect(window,"destroy",G_CALLBACK(close_window),NULL); | ||
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| //Create a draw area | ||
| draw_area=gtk_drawing_area_new(); | ||
| g_signal_connect(draw_area,"draw",G_CALLBACK(draw_cb),NULL); | ||
| //g_signal_connect_after(draw_area,"resize",G_CALLBACK(resize_cb),NULL); | ||
| //Create gestures | ||
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| static MousePos pos; | ||
| pos.draw_area1=draw_area; | ||
| //"Drag" gesture | ||
| drag=gtk_gesture_drag_new(draw_area); | ||
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| gtk_gesture_single_set_button(GTK_GESTURE_SINGLE(drag),GDK_BUTTON_PRIMARY); | ||
| g_signal_connect(drag,"drag-begin",G_CALLBACK(drag_begin),&pos); | ||
| g_signal_connect(drag,"drag-update",G_CALLBACK(drag_update),&pos); | ||
| g_signal_connect(drag,"drag-end",G_CALLBACK(drag_end),&pos); | ||
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| //"Press" gesture | ||
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| press=gtk_gesture_multi_press_new(draw_area); | ||
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| gtk_gesture_single_set_button(GTK_GESTURE_SINGLE(press),GDK_BUTTON_SECONDARY); | ||
| g_signal_connect(press,"pressed",G_CALLBACK(pressed),draw_area); | ||
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| gtk_container_add(GTK_CONTAINER(window),draw_area); | ||
| gtk_widget_show_all(window); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,8 @@ | ||
| #ifndef __DRAWING_H_ | ||
| #define __DRAWING_H_ | ||
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| #include <gtk/gtk.h> | ||
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| void drawing_main(GtkWidget *widget,GtkWindow *parent); | ||
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| #endif |
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