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Canvas: add a nice new syntax for constraint packing

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This commit is contained in:
Paul Davis 2020-06-28 21:36:22 -06:00
parent d6745f043c
commit 502a9e80dc
7 changed files with 367 additions and 92 deletions
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11
libs/canvas/constraint_test.cc
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@ -61,7 +61,6 @@ main (int argc, char* argv[])
vbox->set_fill_color (0xff0000ff);
vbox->set_margin (20);
#if 1
vbox->pack_start (r1, PackOptions(PackExpand|PackFill));
vbox->pack_start (r2, PackOptions(PackExpand|PackFill));
vbox->pack_start (r3, PackOptions(PackExpand|PackFill));
@ -90,7 +89,7 @@ main (int argc, char* argv[])
hbox1->pack_start (r6, PackOptions(PackExpand|PackFill));
BoxConstrainedItem* hb1;
ConstrainedItem* ci;
BoxConstrainedItem* ci;
hb1 = vbox->pack_start (hbox1, PackOptions (PackExpand|PackFill));
@ -105,6 +104,8 @@ main (int argc, char* argv[])
ci = vbox->pack_start (circle, PackOptions (PackExpand|PackFill));
ci->add_constraint (ci->height() == 0.5 * hb1->height());
ci->add_constraint (ci->center_x() == ci4->center_x());
ci->add_constraint (ci->top_padding() == 10);
ci->add_constraint (ci->bottom_padding() == 10);
cBox* hbox2 = new cBox (c, Horizontal);
hbox2->name = "hbox2";
@ -121,11 +122,11 @@ main (int argc, char* argv[])
txt->set ("hello world");
ConstrainedItem* hb2 = vbox->pack_start (hbox2, PackOptions (PackExpand|PackFill));
ConstrainedItem* ti = hbox2->pack_start (txt, PackOptions (PackExpand), PackOptions (0));
ConstrainedItem* ti = hbox2->pack_start (txt, PackOptions (PackExpand|PackFill));
ti->add_constraint (ti->center_x() == hb2->center_x());
ti->add_constraint (ti->center_y() == hb2->center_y() + 20);
#endif
ti->add_constraint (ti->center_y() == hb2->center_y());
win.show_all ();
app.run ();