mirrors
/
fltk
mirror of https://github.com/fltk/fltk
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Minor update to unittest_text to add support for showing the text baseline in testing.

This commit is contained in:
ian 2022-12-07 11:17:55 +00:00
parent cbd37a2870
commit fca63db4ab
1 changed files with 32 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

41
test/unittest_text.cxx
View File

@ -17,27 +17,39 @@
#include "unittests.h"
#include <FL/Fl_Box.H>
#include <FL/Fl_Check_Button.H>
#include <FL/fl_draw.H>
//
// --- fl_text_extents() tests -----------------------------------------------
static void cb_base_bt(Fl_Widget *bt, void*) {
bt->parent()->redraw();
}
//
class TextExtentsTest : public Fl_Widget
class TextExtentsTest : public Fl_Group
{
Fl_Check_Button *base_bt;
void DrawTextAndBoxes(const char *txt, int X, int Y) {
int wo = 0, ho = 0;
int wm = 0, hm = 0, wt = 0, ht = 0;
int dx, dy;
// First, we draw the bounding boxes (fl_measure and fl_text_extents)
// measure text so we can draw the baseline first
fl_measure(txt, wm, hm, 0);
fl_text_extents(txt, dx, dy, wt, ht);
// Draw a baseline before the boxes
if (base_bt->value()) {
fl_color(FL_BLUE);
fl_line((X - 20), Y, (X + wt + 20), Y);
}
// Then we draw the bounding boxes (fl_measure and fl_text_extents)
// draw fl_measure() typographical bounding box
fl_measure(txt, wo, ho, 0);
int desc = fl_descent();
fl_color(FL_RED);
fl_rect(X, Y-ho+desc, wo, ho);
fl_rect(X, Y-hm+desc, wm, hm);
// draw fl_text_extents() glyph bounding box
fl_text_extents(txt, dx, dy, wo, ho);
fl_color(FL_GREEN);
fl_rect(X+dx, Y+dy, wo, ho);
// Then we draw the text to show how it fits insode each of the two boxes
fl_rect(X+dx, Y+dy, wt, ht);
// Then we draw the text to show how it fits inside each of the two boxes
fl_color(FL_BLACK);
fl_draw(txt, X, Y);
}
@ -45,7 +57,16 @@ public:
static Fl_Widget *create() {
return new TextExtentsTest(TESTAREA_X, TESTAREA_Y, TESTAREA_W, TESTAREA_H);
}
TextExtentsTest(int x, int y, int w, int h) : Fl_Widget(x, y, w, h) {}
TextExtentsTest(int x, int y, int w, int h) : Fl_Group(x, y, w, h) {
base_bt = new Fl_Check_Button(x + w - 150, 50, 130, 20, "Show Baseline");
base_bt->box(FL_FLAT_BOX);
base_bt->down_box(FL_DOWN_BOX);
base_bt->callback(cb_base_bt);
Fl_Box *dummy = new Fl_Box ((x + w - 4), (y + h - 4), 2, 2);
resizable(dummy);
end();
}
void draw(void) {
int x0 = x(); // origin is current window position for Fl_Box
int y0 = y();
@ -57,6 +78,8 @@ public:
fl_color(fl_gray_ramp(FL_NUM_GRAY - 3));
fl_rectf(x0, y0, w0, h0);
Fl_Group::draw();
fl_font(FL_HELVETICA, 30);
int xx = x0+55;
int yy = y0+40;