p/logdiag
1
1
Fork 0
Code Issues Pull Requests Releases 4 Wiki Activity

Take a better approach to drawing the grid.

Browse Source 
If the diagram is zoomed out too much, just use bigger steps between dots.
This commit is contained in:
Přemysl Eric Janouch 2011-01-08 16:41:55 +01:00
parent 909a0352cc
commit fe996324d3
1 changed files with 6 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
src/ld-canvas.c
View File

@ -1072,11 +1072,13 @@ on_expose_event (GtkWidget *widget, GdkEventExpose *event, gpointer user_data)
static void
draw_grid (GtkWidget *widget, DrawData *data)
{
gdouble grid_step;
gdouble x_init, y_init;
gdouble x, y;
if (data->scale < 2)
return;
grid_step = data->scale;
while (grid_step < 5)
grid_step *= 5;
ld_canvas_color_apply (COLOR_GET (data->self, COLOR_GRID), data->cr);
cairo_set_line_width (data->cr, 1);
@ -1090,10 +1092,10 @@ draw_grid (GtkWidget *widget, DrawData *data)
/* Iterate over all the points. */
for (x = x_init; x <= data->exposed_rect.x + data->exposed_rect.width;
x += data->scale)
x += grid_step)
{
for (y = y_init; y <= data->exposed_rect.y + data->exposed_rect.height;
y += data->scale)
y += grid_step)
{
cairo_move_to (data->cr, x, y);
cairo_line_to (data->cr, x, y);