benn/lumiera_
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Investigation: rebuild the problematic situation in this controlled environment

Browse source 
Within the timeline drawing code, adding a class to the Gtk::StyleContext on the fly seemingly did not work.
Now we're doing basically the same here in this small Gtk test application,
and it does not work either :-)
This commit is contained in:
Fischlurch 2019-08-03 13:34:56 +02:00
parent 3921a9d41c
commit 1b3cc73d07
1 changed files with 40 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

41
research/gtk-style-experiment.cpp
View file

@ -39,6 +39,7 @@
#include "stage/gtk-base.hpp"
#include "lib/searchpath.hpp"
#include "lib/format-cout.hpp"
#include "lib/error.hpp"
#include "lib/util.hpp"
@ -54,6 +55,19 @@ namespace research {
const string RESOURCE_PATH{"$ORIGIN/gui"};
const string CLASS_experiment{"experiment"};
string
slopeClassName(int depth)
{
switch (depth)
{
case 1: return "track-slope-deep1";
case 2: return "track-slope-deep2";
case 3: return "track-slope-deep3";
case 4: return "track-slope-deep4";
default:return "track-slope-verydeep";
}
}
}
using CairoC = stage::PCairoContext const&;
@ -78,6 +92,10 @@ namespace research {
void adjustSize();
void enableDraw (bool);
int xBorderSiz = 1;
int xObservedSize = -1;
string xObservedPath;
private:
virtual bool on_draw (Cairo::RefPtr<Cairo::Context> const&) override;
@ -200,7 +218,7 @@ namespace research {
StyleTestPanel::experiment_1()
{
frame_.set_label("Experiment 1... GROW");
canvas_.xBorderSiz += 1;
canvas_.adjustSize();
}
@ -209,6 +227,13 @@ namespace research {
StyleTestPanel::experiment_2()
{
frame_.set_label("Experiment 2... DUMP");
cout << "xBorderSize = "<<canvas_.xBorderSiz <<endl;
cout << "xClass = "<<slopeClassName(canvas_.xBorderSiz) <<endl;
cout << "style.path: " << canvas_.xObservedPath <<endl;
cout << "style.border.top = " << canvas_.xObservedSize <<endl;
cout << "................\n\n";
// canvas_.adjustSize();
}
@ -245,6 +270,8 @@ namespace research {
if (not recalcExtension_) return;
uint extH=200, extV=200;
// ADD HERE: Code do find extension of the canvas dynamically...
//
recalcExtension_ = false;
set_size (extH, extV);
}
@ -278,12 +305,24 @@ namespace research {
//////////////////TEST drawing via Gtk::StyleContext
{
int marT = style_->get_margin().get_top();
if (xBorderSiz > 1) {
style_->context_save();
style_->add_class(slopeClassName(xBorderSiz));
}
xObservedSize = style_->get_border().get_top();
xObservedPath = string{style_->get_path().to_string()};
style_->render_frame (cox
,20 // left start of the rectangle
,20 // top of the rectangle
,50 // width of the area
,marT // height to fill
);
if (xBorderSiz > 1) {
style_->context_restore();
}
}
//////////////////TEST drawing via Gtk::StyleContext