Add gtk97

Gtkmm3/gtk97_drawing/meson.build

@@ -0,0 +1,30 @@
+#A Simple Project Test
+project('gtk97', 'cpp',
+        default_options : ['c_std=c17', 'cpp_std=c++17'])
+
+#Initalize variants
+# gnome=import('gnome')
+
+#Compile Resource 
+# gresources = gnome.compile_resources(
+#     'resources', 'res/gtk91.resource.xml',
+#     source_dir: 'res',
+#     c_name: 'resources'
+# )
+
+#The Gtkmm Library as a dependency
+gtkdep = dependency('gtkmm-3.0')
+
+#Additional include dirs
+dir_include = include_directories('..')
+
+#Use Different Build Opinions in windows and Linux
+if host_machine.system() == 'windows'
+    win=import('windows')
+    icon_res=win.compile_resources('../icon.rc')
+    executable('gtk97', icon_res, 'src/main.cc', dependencies : gtkdep,
+				win_subsystem : 'windows', include_directories : dir_include)
+else
+    executable('gtk97', 'src/main.cc', dependencies : gtkdep,
+                include_directories : dir_include)
+endif

Gtkmm3/gtk97_drawing/src/main.cc

@@ -0,0 +1,123 @@
+#include <gtkmm.h>
+
+class MyWin : public Gtk::Window{
+    //Child Widgets
+    Gtk::DrawingArea draw_area;
+    Gtk::ColorButton color_btn;
+    Gtk::Label main_label;
+    Gtk::Box main_box,btn_box;
+
+    //Color Setting
+    Gdk::RGBA m_color;
+    Cairo::RefPtr<Cairo::ImageSurface> surface;
+
+    //Gesture to draw
+    Glib::RefPtr<Gtk::GestureMultiPress> gesture;
+    Glib::RefPtr<Gtk::GestureDrag> drag;
+    double start_x,start_y;
+
+    //Signal Handlers
+    bool draw_event(const Cairo::RefPtr<Cairo::Context> &context){
+        //Show context
+        context->set_source(surface,0,0);
+        context->paint();
+        return true;
+    }
+
+    void draw_brush(double x,double y){
+        //Create Draw Brush
+        auto cr=Cairo::Context::create(surface);
+        cr->arc(x, y, 3, 0, 2 * G_PI);
+
+        //Set Color
+        cr->set_source_rgba(m_color.get_red(),m_color.get_green(),
+                            m_color.get_blue(),m_color.get_alpha());
+
+        //Fill Color and Delete the brush
+        cr->fill();
+        cr.clear();
+
+        draw_area.queue_draw();
+    }
+
+    void button_press(int n_press, double x, double y){
+        if(surface){
+           //Clear the content in draw area
+            auto cr=Cairo::Context::create(surface);
+            cr->set_source_rgb(1,1,1);
+            cr->paint();
+            cr.clear();
+            draw_area.queue_draw();
+        }
+        
+    }
+
+    void drag_begin(double x,double y){
+        //The Begin
+        start_x=x;start_y=y;
+        draw_brush(x,y);
+    }
+
+    void drag_progress(double x,double y){
+        //Progress and end
+        draw_brush(x+start_x,y+start_y);
+    }
+
+    void color_set(){
+        m_color=color_btn.get_rgba();
+    }
+public:
+    MyWin()
+    :main_label("Select a color"),
+    main_box(Gtk::ORIENTATION_HORIZONTAL,5),
+    btn_box(Gtk::ORIENTATION_VERTICAL,5)
+    {
+        //Ininalize window
+        set_icon_name("org.gtk.daleclack");
+        set_default_size(640,480);
+
+        //Color set panel
+        btn_box.pack_start(main_label,Gtk::PACK_SHRINK);
+        btn_box.pack_start(color_btn,Gtk::PACK_SHRINK);
+        btn_box.set_halign(Gtk::ALIGN_CENTER);
+        btn_box.set_valign(Gtk::ALIGN_CENTER);
+
+        //Add Gesture
+        gesture=Gtk::GestureMultiPress::create(draw_area);
+        gesture->set_button(GDK_BUTTON_SECONDARY);
+        gesture->signal_pressed().connect(sigc::mem_fun(*this,&MyWin::button_press));
+
+        drag=Gtk::GestureDrag::create(draw_area);
+        drag->set_button(GDK_BUTTON_PRIMARY);
+        drag->signal_drag_begin().connect(sigc::mem_fun(*this,&MyWin::drag_begin));
+        drag->signal_drag_update().connect(sigc::mem_fun(*this,&MyWin::drag_progress));
+        drag->signal_drag_end().connect(sigc::mem_fun(*this,&MyWin::drag_progress));
+
+        //Create a Surface
+        surface=Cairo::ImageSurface::create(Cairo::FORMAT_ARGB32,600,480);
+
+        //Set Default Color
+        m_color.set_blue(0);
+        m_color.set_green(0);
+        m_color.set_red(0);
+        m_color.set_alpha(1);
+        color_btn.set_rgba(m_color);
+        color_btn.signal_color_set().connect(sigc::mem_fun(*this,&MyWin::color_set));
+
+
+        //Initalize main widget    
+        draw_area.set_size_request(600,480);
+        draw_area.signal_draw().connect(sigc::mem_fun(*this,&MyWin::draw_event));
+        main_box.pack_start(draw_area);
+        main_box.pack_start(btn_box,Gtk::PACK_SHRINK);
+        main_box.set_border_width(10);
+        add(main_box);
+        show_all_children();
+    }
+};
+
+int main(int argc,char **argv){
+    auto app=Gtk::Application::create(argc,argv,"org.gtk.daleclack");
+    MyWin window;
+    return app->run(window);
+}