- added test-cairo_widget

git-svn-id: svn://svn.gna.org/svn/sgpemv2/trunk@906 3ecf2c5c-341e-0410-92b4-d18e462d057c

src/testsuite/test-cairo_widget.cc

@@ -0,0 +1,244 @@
+// src/simulation_widget.hh - Copyright 2005, 2006, University
+//               of Padova, dept. of Pure and Applied
+//               Mathematics
+//
+// This file is part of SGPEMv2.
+//
+// This is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// SGPEMv2 is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with SGPEMv2; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+#include "config.h"
+
+#include "cairo_widget.hh"
+#include "cairo_elements.hh"
+// #include "backend/string_utils.hh"
+#include "gettext.h"
+
+
+#include <glibmm/ustring.h>
+#include <gtkmm/box.h>
+#include <gtkmm/button.h>
+#include <gtkmm/buttonbox.h>
+#include <gtkmm/fixed.h>
+#include <gtkmm/main.h>
+#include <gtkmm/window.h>
+
+#include <cassert>
+#include <iostream>
+#include <sstream>
+
+#include <iostream>
+
+// ------------------------------------------------------
+//
+// TestWidget class
+//
+// ------------------------------------------------------
+
+namespace sgpem
+{
+  class TestWidget : public CairoWidget
+  {
+  public:
+    TestWidget();
+    virtual ~TestWidget();
+
+  protected:
+    virtual bool on_button_press_event(GdkEventButton* event);
+
+    void draw_widget(cairo_t* ctx);
+    void change_scaling_mode();
+
+    virtual void calc_drawing_size(size_t& width, size_t& height) const;
+    // void calc_size(const History& history, size_t& width, size_t& height) const;
+  private:
+    int _desired_w;
+    int _desired_h;
+  };
+
+}
+
+using namespace sgpem;
+
+TestWidget::TestWidget()
+    : Glib::ObjectBase("sgpem_TestWidget"), CairoWidget(),
+    _desired_w(200), _desired_h(300)
+{
+}
+
+
+TestWidget::~TestWidget()
+{
+}
+
+bool
+TestWidget::on_button_press_event(GdkEventButton* event)
+{
+  std::cout << " on_button_press_event " << std::endl;
+  change_scaling_mode();
+  // Not here. Yet.
+  return true;
+}
+
+void
+TestWidget::draw_widget(cairo_t* ctx)
+{
+  // show line
+  cairo_set_source_rgb(ctx, 0, 0, 0);
+  cairo_move_to(ctx, 0, 0);
+  cairo_line_to(ctx, _desired_w, _desired_w);
+  cairo_stroke(ctx);
+  
+  // NOTE: just to try
+  CairoElements ce(ctx);
+
+  Rectangle area = { 10, 10, _desired_w-10, _desired_h/2 };
+  ce.draw_container(area);
+  Color red = { 1, 0, 0 };
+  Point center1 = { _desired_w/4, _desired_h/4*3 };
+  ce.draw_3dsphere(center1, _desired_w/10, red);
+  
+  Color yellow = { 1, 1, 0 };
+  Point center2 = { _desired_w/4*2, _desired_h/4*3 };
+  ce.draw_3dsphere(center2, _desired_w/10, yellow);
+
+  Color green = { 0, 1, 0 };
+  Point center3 = { _desired_w/4*3, _desired_h/4*3 };
+  ce.draw_3dsphere(center3, _desired_w/10, green);
+
+  // show text
+  Glib::ustring msg;
+  switch(get_scaling_mode())
+  {
+    case CairoWidget::scaling_none:
+      msg = "scaling_none = without any scaling";
+      break;
+    case CairoWidget::scaling_to_w:
+      msg = "scaling_to_w = uses width to calculate scale factor";
+      break;
+    case CairoWidget::scaling_to_h:
+      msg = "scaling_to_h = uses height to calculate scale factor";
+      break;
+    case CairoWidget::scaling_min:
+      msg = "scaling_min = uses minimum scale factor from width, height";
+      break;
+    case CairoWidget::scaling_max:
+      msg = "scaling_max = uses maximum scale factor from width, height";
+      break;
+    case CairoWidget::scaling_all:
+      msg = "scaling_all = scale to stretch into client area";
+      break;
+  }
+  cairo_move_to(ctx, 10, 10);
+  cairo_show_text(ctx,msg.c_str());
+  msg = "clic to change mode...";
+  cairo_move_to(ctx, 10, 30);
+  cairo_show_text(ctx,msg.c_str());
+  
+
+
+
+}
+
+
+void
+TestWidget::calc_drawing_size(size_t& width, size_t& height) const
+{
+  // FIXME: write me
+  // some magic here!
+  width  = _desired_w;
+  height = _desired_h;
+}
+
+void
+TestWidget::change_scaling_mode()
+{
+
+  std::cout << " change_scaling_mode " << std::endl;
+  scaling_mode scaling = get_scaling_mode();
+  switch(scaling)
+  {
+    case scaling_none:
+      set_scaling_mode(scaling_to_w);
+      break;
+    case scaling_to_w:
+    case scaling_to_h:
+    case scaling_min:
+    case scaling_max:
+      set_scaling_mode((scaling_mode)(scaling << 1));
+      break;
+    case scaling_all:
+      set_scaling_mode(scaling_none);
+      break;
+  }
+  redraw();
+}
+
+
+// ------------------------------------------------------
+//
+// MainWindow class
+//
+// ------------------------------------------------------
+class MainWindow : public Gtk::Window
+{
+public:
+  MainWindow();
+  virtual ~MainWindow();
+
+protected:
+  TestWidget _test_widget;
+};
+
+
+MainWindow::MainWindow()
+{
+  // This just sets the title of our new window.
+  set_title("Cairo Widget Test: \"Do you like semaphores?\"");
+
+  add(_test_widget);
+  _test_widget.show();
+}
+
+MainWindow::~MainWindow()
+{
+}
+
+
+
+// ------------------------------------------------------
+//
+// main()
+//
+// ------------------------------------------------------
+int
+main(int argc, char** argv)
+{
+  int ret = 0;
+
+
+  Gtk::Main kit(argc, argv);
+  
+  // Gtk::Window win;
+  MainWindow win;
+  
+  win.set_border_width(10);
+  win.resize (200, 200);
+
+  Gtk::Main::run(win);
+
+  return ret;
+}
+
+