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Bug 790293 - Scale tool: Ctrl uses top-left corner of selection... 

...instead of center

The scale tool implicitly uses GimpToolTransformGrid's "pivot-x" and
"pivot-y" properties, so they need to be properly initialized and
updated to be at the grid's center.

Also add a tool options toggle "Around center".
This commit is contained in:
Michael Natterer 2018-01-11 20:05:53 +01:00
parent 7eccbe557e
commit e27ce76a49
2 changed files with 71 additions and 59 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
app/tools/gimpscaletool.c
View File

@ -205,6 +205,8 @@ gimp_scale_tool_get_widget (GimpTransformTool *tr_tool)
tr_tool->y2);
g_object_set (widget,
"pivot-x", (tr_tool->x1 + tr_tool->x2) / 2.0,
"pivot-y", (tr_tool->y1 + tr_tool->y2) / 2.0,
"inside-function", GIMP_TRANSFORM_FUNCTION_SCALE,
"outside-function", GIMP_TRANSFORM_FUNCTION_SCALE,
"use-corner-handles", TRUE,
@ -241,6 +243,8 @@ gimp_scale_tool_recalc_matrix (GimpTransformTool *tr_tool,
"y1", (gdouble) tr_tool->y1,
"x2", (gdouble) tr_tool->x2,
"y2", (gdouble) tr_tool->y2,
"pivot-x", (tr_tool->x1 + tr_tool->x2) / 2.0,
"pivot-y", (tr_tool->y1 + tr_tool->y2) / 2.0,
NULL);
}

126
app/tools/gimptransformoptions.c
View File

@ -406,18 +406,17 @@ gimp_transform_options_reset (GimpConfig *config)
GtkWidget *
gimp_transform_options_gui (GimpToolOptions *tool_options)
{
GObject *config = G_OBJECT (tool_options);
GtkWidget *vbox = gimp_tool_options_gui (tool_options);
GtkWidget *hbox;
GtkWidget *box;
GtkWidget *label;
GtkWidget *frame;
GtkWidget *combo;
GtkWidget *scale;
GtkWidget *grid_box;
const gchar *constrain_name = NULL;
const gchar *constrain_label = NULL;
const gchar *constrain_tip = NULL;
GObject *config = G_OBJECT (tool_options);
GtkWidget *vbox = gimp_tool_options_gui (tool_options);
GtkWidget *hbox;
GtkWidget *box;
GtkWidget *label;
GtkWidget *frame;
GtkWidget *combo;
GtkWidget *scale;
GtkWidget *grid_box;
GdkModifierType extend_mask = gimp_get_extend_selection_mask ();
GdkModifierType constrain_mask = gimp_get_constrain_behavior_mask ();
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
@ -486,56 +485,85 @@ gimp_transform_options_gui (GimpToolOptions *tool_options)
if (tool_options->tool_info->tool_type == GIMP_TYPE_ROTATE_TOOL)
{
constrain_name = "constrain-rotate";
constrain_label = _("15 degrees (%s)");
constrain_tip = _("Limit rotation steps to 15 degrees");
GtkWidget *button;
gchar *label;
label = g_strdup_printf (_("15 degrees (%s)"),
gimp_get_mod_string (extend_mask));
button = gimp_prop_check_button_new (config, "constrain-rotate", label);
gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
gimp_help_set_help_data (button, _("Limit rotation steps to 15 degrees"),
NULL);
g_free (label);
}
else if (tool_options->tool_info->tool_type == GIMP_TYPE_SCALE_TOOL)
{
constrain_name = "constrain-scale";
constrain_label = _("Keep aspect (%s)");
constrain_tip = _("Keep the original aspect ratio");
}
GtkWidget *button;
gchar *label;
//TODO: check that the selection tools use the gimp_get_*_mask() functions for constrain/etc or change to what they use
label = g_strdup_printf (_("Keep aspect (%s)"),
gimp_get_mod_string (extend_mask));
button = gimp_prop_check_button_new (config, "constrain-scale", label);
gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
gimp_help_set_help_data (button, _("Keep the original aspect ratio"),
NULL);
g_free (label);
label = g_strdup_printf (_("Around center (%s)"),
gimp_get_mod_string (constrain_mask));
button = gimp_prop_check_button_new (config, "frompivot-scale", label);
gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
gimp_help_set_help_data (button, _("Scale around the center point"),
NULL);
g_free (label);
}
else if (tool_options->tool_info->tool_type == GIMP_TYPE_UNIFIED_TRANSFORM_TOOL)
{
GdkModifierType shift = gimp_get_extend_selection_mask ();
GdkModifierType ctrl = gimp_get_constrain_behavior_mask ();
struct
{
GdkModifierType mod;
gchar *name;
gchar *desc;
gchar *tip;
GdkModifierType mod;
gchar *name;
gchar *desc;
gchar *tip;
}
opt_list[] =
{
{ shift, NULL, N_("Constrain (%s)") },
{ shift, "constrain-move", N_("Move"),
{ extend_mask, NULL, N_("Constrain (%s)") },
{ extend_mask, "constrain-move", N_("Move"),
N_("Constrain movement to 45 degree angles from center (%s)") },
{ shift, "constrain-scale", N_("Scale"),
{ extend_mask, "constrain-scale", N_("Scale"),
N_("Maintain aspect ratio when scaling (%s)") },
{ shift, "constrain-rotate", N_("Rotate"),
{ extend_mask, "constrain-rotate", N_("Rotate"),
N_("Constrain rotation to 15 degree increments (%s)") },
{ shift, "constrain-shear", N_("Shear"),
{ extend_mask, "constrain-shear", N_("Shear"),
N_("Shear along edge direction only (%s)") },
{ shift, "constrain-perspective", N_("Perspective"),
{ extend_mask, "constrain-perspective", N_("Perspective"),
N_("Constrain perspective handles to move along edges and diagonal (%s)") },
{ ctrl, NULL,
{ constrain_mask, NULL,
N_("From pivot (%s)") },
{ ctrl, "frompivot-scale", N_("Scale"),
{ constrain_mask, "frompivot-scale", N_("Scale"),
N_("Scale from pivot point (%s)") },
{ ctrl, "frompivot-shear", N_("Shear"),
{ constrain_mask, "frompivot-shear", N_("Shear"),
N_("Shear opposite edge by same amount (%s)") },
{ ctrl, "frompivot-perspective", N_("Perspective"),
{ constrain_mask, "frompivot-perspective", N_("Perspective"),
N_("Maintain position of pivot while changing perspective (%s)") },
{ 0, NULL,
N_("Pivot") },
{ shift, "cornersnap", N_("Snap (%s)"),
{ extend_mask, "cornersnap", N_("Snap (%s)"),
N_("Snap pivot to corners and center (%s)") },
{ 0, "fixedpivot", N_("Lock"),
N_("Lock pivot position to canvas") },
@ -549,7 +577,7 @@ gimp_transform_options_gui (GimpToolOptions *tool_options)
for (i = 0; i < G_N_ELEMENTS (opt_list); i++)
{
if (!opt_list[i].name && !opt_list[i].desc)
if (! opt_list[i].name && ! opt_list[i].desc)
{
frame = NULL;
continue;
@ -589,26 +617,6 @@ gimp_transform_options_gui (GimpToolOptions *tool_options)
}
}
if (constrain_label)
{
GtkWidget *button;
gchar *label;
GdkModifierType constrain_mask;
constrain_mask = gimp_get_extend_selection_mask ();
label = g_strdup_printf (constrain_label,
gimp_get_mod_string (constrain_mask));
button = gimp_prop_check_button_new (config, constrain_name, label);
gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);
gtk_widget_show (button);
gimp_help_set_help_data (button, constrain_tip, NULL);
g_free (label);
}
return vbox;
}