Robin Gareus
10253a6ae4
Since fc90c92a49 Gtkmm2ext::random_color () uses g_random_int()
which is implicitly seeded when first used.
128 lines
3.5 KiB
C++
128 lines
3.5 KiB
C++
#include <iostream>
|
|
|
|
#include <gtkmm/adjustment.h>
|
|
#include <gtkmm/main.h>
|
|
#include <gtkmm/window.h>
|
|
|
|
#include "gtkmm2ext/colors.h"
|
|
|
|
#include "canvas/box.h"
|
|
#include "canvas/canvas.h"
|
|
#include "canvas/circle.h"
|
|
#include "canvas/constrained_item.h"
|
|
#include "canvas/constraint_packer.h"
|
|
#include "canvas/rectangle.h"
|
|
#include "canvas/text.h"
|
|
|
|
using namespace ArdourCanvas;
|
|
using namespace Gtk;
|
|
using std::cerr;
|
|
using std::endl;
|
|
|
|
int
|
|
main (int argc, char* argv[])
|
|
{
|
|
Gtk::Main app (&argc, &argv);
|
|
|
|
Gtk::Window win;
|
|
Gtk::Adjustment hadj (0, 0, 1000, 1, 10);
|
|
Gtk::Adjustment vadj (0, 0, 1000, 1, 10);
|
|
GtkCanvasViewport cview (hadj, vadj);
|
|
Canvas* c = cview.canvas ();
|
|
|
|
c->set_background_color (0xffffffff);
|
|
|
|
win.add (cview);
|
|
|
|
/* Make some items */
|
|
|
|
Rectangle* r1 = new Rectangle (c);
|
|
Rectangle* r2 = new Rectangle (c);
|
|
Rectangle* r3 = new Rectangle (c);
|
|
|
|
r1->set_fill_color (Gtkmm2ext::random_color());
|
|
r2->set_fill_color (Gtkmm2ext::random_color());
|
|
r3->set_fill_color (Gtkmm2ext::random_color());
|
|
|
|
r1->name = "L";
|
|
r2->name = "R";
|
|
r3->name = "C";
|
|
|
|
r1->set_size_request (20, 20);
|
|
r2->set_size_request (30, 30);
|
|
r3->set_size_request (40, 40);
|
|
|
|
Text* txt = new Text (c);
|
|
txt->name = "text";
|
|
Pango::FontDescription font ("Sans");
|
|
txt->set_font_description (font);
|
|
txt->set ("hello world");
|
|
|
|
Rectangle* bb = new Rectangle (c);
|
|
bb->set_fill_color (Gtkmm2ext::random_color());
|
|
|
|
Circle* circ = new Circle (c);
|
|
circ->name = "circle";
|
|
circ->set_fill_color (Gtkmm2ext::random_color());
|
|
circ->set_outline_color (Gtkmm2ext::random_color());
|
|
|
|
/* create a container */
|
|
|
|
ConstraintPacker* packer = new ConstraintPacker (c->root());
|
|
|
|
/* give it a minimum size */
|
|
|
|
packer->set_size_request (100, 100);
|
|
|
|
/* add stuff */
|
|
|
|
ConstrainedItem* left = packer->add_constrained (r1);
|
|
ConstrainedItem* right = packer->add_constrained (r2);
|
|
ConstrainedItem* center = packer->add_constrained (r3);
|
|
ConstrainedItem* text = packer->add_constrained (txt);
|
|
ConstrainedItem* bens_box = packer->add_constrained (bb);
|
|
ConstrainedItem* circle = packer->add_constrained (circ);
|
|
|
|
/* first, constraints that connect an item dimension to the container dimensions or a constant */
|
|
packer->constrain (left->left() == 0);
|
|
packer->constrain (left->height() == packer->height);
|
|
packer->constrain (left->top() == 0);
|
|
packer->constrain (left->width() == 0.5 * packer->width);
|
|
packer->constrain (right->right() == packer->width);
|
|
packer->constrain (center->height() == 0.5 * packer->height);
|
|
|
|
/* second, constraints that connect an item dimension to other items */
|
|
center->right_of (*left, 50);
|
|
right->right_of (*center);
|
|
center->same_width_as (*right);
|
|
right->same_width_as (*center);
|
|
right->same_height_as (*left);
|
|
center->top_aligned_with (*left);
|
|
right->top_aligned_with (*center);
|
|
|
|
/* XXX this needs to somehow move into ConstraintPacker but I currently
|
|
* see no way to build a constraint from a container of
|
|
* ConstrainedItems
|
|
*/
|
|
|
|
packer->constrain (left->width() + right->width() + center->width() +
|
|
left->left_padding() + left->right_padding() +
|
|
center->left_padding() + center->right_padding() +
|
|
right->left_padding() + right->right_padding()
|
|
== packer->width);
|
|
|
|
/* Text at a fixed position */
|
|
text->at (Duple (150, 50));
|
|
/* Rectangle of fixed position and size */
|
|
bens_box->box (Rect (40, 40, 80, 80));
|
|
|
|
/* a circle sized and centered */
|
|
circle->size (Duple (30, 30));
|
|
circle->centered_on (*center);
|
|
|
|
win.show_all ();
|
|
app.run ();
|
|
|
|
return 0;
|
|
}
|