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app: use gimp_scroll_adjustment_values() for scrolling the canvas

This commit is contained in:
Michael Natterer 2018-05-10 23:33:35 +02:00
parent 4a979995a3
commit 613d02ca3a
1 changed files with 9 additions and 37 deletions
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46
app/display/gimpdisplayshell-tool-events.c
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@ -730,11 +730,9 @@ gimp_display_shell_canvas_tool_events (GtkWidget *canvas,
! gimp_controller_wheel_scroll (GIMP_CONTROLLER_WHEEL (wheel),
sevent))
{
GdkScrollDirection direction = sevent->direction;
if (state & gimp_get_toggle_behavior_mask ())
{
switch (direction)
switch (sevent->direction)
{
case GDK_SCROLL_UP:
gimp_display_shell_scale (shell,
@ -756,42 +754,16 @@ gimp_display_shell_canvas_tool_events (GtkWidget *canvas,
}
else
{
GtkAdjustment *adj = NULL;
gdouble value;
gdouble value_x;
gdouble value_y;
if (state & GDK_SHIFT_MASK)
switch (direction)
{
case GDK_SCROLL_UP: direction = GDK_SCROLL_LEFT; break;
case GDK_SCROLL_DOWN: direction = GDK_SCROLL_RIGHT; break;
case GDK_SCROLL_LEFT: direction = GDK_SCROLL_UP; break;
case GDK_SCROLL_RIGHT: direction = GDK_SCROLL_DOWN; break;
}
gimp_scroll_adjustment_values (sevent,
shell->hsbdata,
shell->vsbdata,
&value_x, &value_y);
switch (direction)
{
case GDK_SCROLL_LEFT:
case GDK_SCROLL_RIGHT:
adj = shell->hsbdata;
break;
case GDK_SCROLL_UP:
case GDK_SCROLL_DOWN:
adj = shell->vsbdata;
break;
}
value = (gtk_adjustment_get_value (adj) +
((direction == GDK_SCROLL_UP ||
direction == GDK_SCROLL_LEFT) ?
-gtk_adjustment_get_page_increment (adj) / 2 :
gtk_adjustment_get_page_increment (adj) / 2));
value = CLAMP (value,
gtk_adjustment_get_lower (adj),
gtk_adjustment_get_upper (adj) -
gtk_adjustment_get_page_size (adj));
gtk_adjustment_set_value (adj, value);
gtk_adjustment_set_value (shell->hsbdata, value_x);
gtk_adjustment_set_value (shell->vsbdata, value_y);
}
}