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Canvas: third constraint test

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This commit is contained in:
Paul Davis 2020-06-19 18:06:48 -06:00
parent 9280524156
commit e95d3d37b4
2 changed files with 105 additions and 0 deletions
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96
libs/canvas/constraint_test3.cc Normal file
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@ -0,0 +1,96 @@
#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/cbox.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);
srandom (time ((time_t) 0));
cview.set_size_request (100, 100);
win.add (cview);
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 = "r1";
r2->name = "r2";
r3->name = "r3";
r1->set_intrinsic_size (20, 20);
r2->set_intrinsic_size (30, 30);
r3->set_intrinsic_size (40, 40);
ConstraintPacker* packer = new ConstraintPacker (c->root());
ConstrainedItem* left = packer->add_constrained (r1);
ConstrainedItem* right = packer->add_constrained (r2);
ConstrainedItem* center = packer->add_constrained (r3);
/* x-axis */
packer->constrain (left->left() == 0);
packer->constrain (center->left() == left->right());
packer->constrain (right->left() == center->right());
packer->constrain (left->width() == packer->width * 0.4);
packer->constrain (center->width() == packer->width * 0.1);
packer->constrain (left->width() + right->width() + center->width() == packer->width);
packer->constrain (left->right() == left->left() + left->width());
packer->constrain (right->right() == right->left() + right->width());
packer->constrain (center->right() == center->left() + center->width());
/* y-axis */
packer->constrain (left->top() == 0);
packer->constrain (right->top() == left->top());
packer->constrain (center->top() == left->top());
packer->constrain (left->height() == packer->height);
packer->constrain (right->height() == left->height());
packer->constrain (center->height() == left->height());
packer->constrain (left->bottom() == left->top() + left->height());
packer->constrain (center->bottom() == center->top() + center->height());
packer->constrain (right->bottom() == right->top() + right->height());
win.show_all ();
app.run ();
return 0;
}

9
libs/canvas/wscript
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@ -181,6 +181,15 @@ def build(bld):
constraint_test2.name = 'constraint_test2'
constraint_test2.target = 'constraint_test2'
constraint_test2.install_path = ''
constraint_test3_src = [ 'constraint_test3.cc' ]
constraint_test3 = bld (features = 'cxx cxxprogram')
constraint_test3.source = constraint_test3_src
constraint_test3.includes = obj.includes + ['../pbd', '../gtkmm2ext']
constraint_test3.use = [ 'GTKMM', 'libcanvas', 'libgtkmm2ext' ]
constraint_test3.name = 'constraint_test3'
constraint_test3.target = 'constraint_test3'
constraint_test3.install_path = ''
def shutdown():
autowaf.shutdown()