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app: properly "auto straighten" in measure tool. 

In particular, this tool should not make huge rotation where the top
ends up in the bottom and it should not depend on whether we started the
measure tool from the left, right, bottom or top. This is fixed by using
atan() instead of atan2().

Also make a proper tooltip text. Help id is unneeded most likely though.
Finally do some cleaning and alignment.
This commit is contained in:
Jehan 2018-06-05 16:00:43 +02:00
parent 9baf2b62cd
commit ba1d937dfb
2 changed files with 13 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
app/tools/gimpmeasureoptions.c
View File

@ -130,7 +130,9 @@ gimp_measure_options_gui (GimpToolOptions *tool_options)
button = gtk_button_new_with_label (_("Auto straighten")); button = gtk_button_new_with_label (_("Auto straighten"));
gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0); gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);
gtk_widget_set_sensitive (button, FALSE); gtk_widget_set_sensitive (button, FALSE);
// gimp_help_set_help_data (button, NULL, GIMP_HELP_PATH_STROKE); gimp_help_set_help_data (button,
_("Rotate the active layer using the measurement line as horizon"),
NULL);
gtk_widget_show (button); gtk_widget_show (button);
GIMP_MEASURE_OPTIONS (tool_options)->auto_straighten = button; GIMP_MEASURE_OPTIONS (tool_options)->auto_straighten = button;

11
app/tools/gimpmeasuretool.c
View File

@ -110,7 +110,7 @@ static GimpToolGui * gimp_measure_tool_dialog_new (GimpMeasureTool *measur
static void gimp_measure_tool_dialog_update (GimpMeasureTool *measure, static void gimp_measure_tool_dialog_update (GimpMeasureTool *measure,
GimpDisplay *display); GimpDisplay *display);
static void rotate_active_layer (GtkWidget *button, static void gimp_measure_tool_rotate_active_layer (GtkWidget *button,
GimpMeasureTool *measure); GimpMeasureTool *measure);
G_DEFINE_TYPE (GimpMeasureTool, gimp_measure_tool, GIMP_TYPE_DRAW_TOOL) G_DEFINE_TYPE (GimpMeasureTool, gimp_measure_tool, GIMP_TYPE_DRAW_TOOL)
@ -281,6 +281,7 @@ gimp_measure_tool_compass_changed (GimpToolWidget *widget,
GimpMeasureTool *measure) GimpMeasureTool *measure)
{ {
GimpMeasureOptions *options = GIMP_MEASURE_TOOL_GET_OPTIONS (measure); GimpMeasureOptions *options = GIMP_MEASURE_TOOL_GET_OPTIONS (measure);
g_object_get (widget, g_object_get (widget,
"n-points", &measure->n_points, "n-points", &measure->n_points,
"x1", &measure->x[0], "x1", &measure->x[0],
@ -398,7 +399,7 @@ gimp_measure_tool_start (GimpMeasureTool *measure,
G_CALLBACK (gimp_measure_tool_compass_create_guides), G_CALLBACK (gimp_measure_tool_compass_create_guides),
measure); measure);
g_signal_connect (options->auto_straighten, "clicked", g_signal_connect (options->auto_straighten, "clicked",
G_CALLBACK (rotate_active_layer), G_CALLBACK (gimp_measure_tool_rotate_active_layer),
measure); measure);
tool->display = display; tool->display = display;
@ -421,7 +422,7 @@ gimp_measure_tool_halt (GimpMeasureTool *measure)
gimp_draw_tool_stop (GIMP_DRAW_TOOL (measure)); gimp_draw_tool_stop (GIMP_DRAW_TOOL (measure));
g_signal_handlers_disconnect_by_func (options->auto_straighten, g_signal_handlers_disconnect_by_func (options->auto_straighten,
G_CALLBACK (rotate_active_layer), G_CALLBACK (gimp_measure_tool_rotate_active_layer),
measure); measure);
gimp_draw_tool_set_widget (GIMP_DRAW_TOOL (tool), NULL); gimp_draw_tool_set_widget (GIMP_DRAW_TOOL (tool), NULL);
@ -803,7 +804,7 @@ gimp_measure_tool_dialog_new (GimpMeasureTool *measure)
} }
static void static void
rotate_active_layer (GtkWidget *button, gimp_measure_tool_rotate_active_layer (GtkWidget *button,
GimpMeasureTool *measure) GimpMeasureTool *measure)
{ {
GimpMeasureOptions *options = GIMP_MEASURE_TOOL_GET_OPTIONS (measure); GimpMeasureOptions *options = GIMP_MEASURE_TOOL_GET_OPTIONS (measure);
@ -813,7 +814,7 @@ rotate_active_layer (GtkWidget *button,
gdouble ax = measure->x[1] - measure->x[0]; gdouble ax = measure->x[1] - measure->x[0];
gdouble ay = measure->y[1] - measure->y[0]; gdouble ay = measure->y[1] - measure->y[0];
GimpLayer *item = gimp_image_get_active_layer (image); GimpLayer *item = gimp_image_get_active_layer (image);
gdouble angle = atan2 (ay, ax); gdouble angle = atan (ay / ax);
GimpMatrix3 matrix; GimpMatrix3 matrix;