add "remove color" ColorItem to the swatches dialog

(bzr r7164)

4 files changed, 63 insertions, 26 deletions

diff --git a/src/dialogs/eek-preview.cpp b/src/dialogs/eek-preview.cpp
index f9aadc561..a4e28b2fd 100644
--- a/src/dialogs/eek-preview.cpp
+++ b/src/dialogs/eek-preview.cpp
@@ -36,9 +36,13 @@
  * the terms of any one of the MPL, the GPL or the LGPL.
  *
  * ***** END LICENSE BLOCK ***** */
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
 
 #include <gtk/gtk.h>
 #include "eek-preview.h"
+#include "path-prefix.h"
 
 #define PRIME_BUTTON_MAGIC_NUMBER 1
 
@@ -57,15 +61,11 @@ static GtkWidgetClass* parent_class = 0;
 
 void eek_preview_set_color( EekPreview* preview, int r, int g, int b )
 {
-    if ( (preview->_r = r)
-         || (preview->_g = g)
-         || (preview->_b = b) ) {
-        preview->_r = r;
-        preview->_g = g;
-        preview->_b = b;
-
-        gtk_widget_queue_draw(GTK_WIDGET(preview));
-    }
+    preview->_r = r;
+    preview->_g = g;
+    preview->_b = b;
+
+    gtk_widget_queue_draw(GTK_WIDGET(preview));
 }
 
 
@@ -222,6 +222,7 @@ gboolean eek_preview_expose_event( GtkWidget* widget, GdkEventExpose* event )
         GdkGC *gc = gdk_gc_new( widget->window );
         EekPreview* preview = EEK_PREVIEW(widget);
         GdkColor fg = {0, preview->_r, preview->_g, preview->_b};
+
         gdk_colormap_alloc_color( gdk_colormap_get_system(), &fg, FALSE, TRUE );
 
         gdk_gc_set_foreground( gc, &fg );
@@ -306,6 +307,28 @@ gboolean eek_preview_expose_event( GtkWidget* widget, GdkEventExpose* event )
             }
         }
 
+        if (preview->_isRemove){
+            GtkDrawingArea* da = &(preview->drawing);
+            GdkDrawable* drawable = (GdkDrawable*) (((GtkWidget*)da)->window);
+            gint w,h;
+            gdk_drawable_get_size(drawable, &w, &h);
+            GError *error = NULL;
+            gchar *filepath = (gchar *) g_strdup_printf("%s/remove-color.png", INKSCAPE_PIXMAPDIR);
+            g_warning("filepath: %s", filepath);
+            gsize bytesRead = 0;
+            gsize bytesWritten = 0;
+            gchar *localFilename = g_filename_from_utf8( filepath,
+                                                 -1,
+                                                 &bytesRead,
+                                                 &bytesWritten,
+                                                 &error);
+            GdkPixbuf* pixbuf = gdk_pixbuf_new_from_file_at_size(localFilename, w, h, &error);
+            gdk_draw_pixbuf(drawable, 0, pixbuf, 0, 0, 0, 0, w, h, GDK_RGB_DITHER_NONE, 0, 0);
+            g_free(localFilename);
+            g_free(filepath);
+        }
+
+
         if ( GTK_WIDGET_HAS_FOCUS(widget) ) {
             gtk_paint_focus( style,
                              widget->window,
@@ -633,6 +656,7 @@ static void eek_preview_init( EekPreview *preview )
     preview->_hot = FALSE;
     preview->_within = FALSE;
     preview->_takesFocus = FALSE;
+    preview->_isRemove = FALSE;
 
     preview->_prevstyle = PREVIEW_STYLE_ICON;
     preview->_view = VIEW_TYPE_LIST;
diff --git a/src/dialogs/eek-preview.h b/src/dialogs/eek-preview.h
index 40597eb48..e01472f1e 100644
--- a/src/dialogs/eek-preview.h
+++ b/src/dialogs/eek-preview.h
@@ -100,6 +100,7 @@ struct _EekPreview
     gboolean _hot;
     gboolean _within;
     gboolean _takesFocus;
+    gboolean _isRemove;
 
     PreviewStyle _prevstyle;
     ViewType _view;
diff --git a/src/dialogs/swatches.cpp b/src/dialogs/swatches.cpp
index 2eb30f27c..13c65f707 100644
--- a/src/dialogs/swatches.cpp
+++ b/src/dialogs/swatches.cpp
@@ -42,9 +42,10 @@ namespace Inkscape {
 namespace UI {
 namespace Dialogs {
 
-
+ColorItem::ColorItem() : _isRemove(true){};
 ColorItem::ColorItem( unsigned int r, unsigned int g, unsigned int b, Glib::ustring& name ) :
     def( r, g, b, name ),
+    _isRemove(false),
     _isLive(false),
     _linkIsTone(false),
     _linkPercent(0),
@@ -532,7 +533,7 @@ void ColorItem::_colorDefChanged(void* data)
 Gtk::Widget* ColorItem::getPreview(PreviewStyle style, ViewType view, ::PreviewSize size, guint ratio)
 {
     Gtk::Widget* widget = 0;
-    if ( style == PREVIEW_STYLE_BLURB ) {
+    if ( style == PREVIEW_STYLE_BLURB) {
         Gtk::Label *lbl = new Gtk::Label(def.descr);
         lbl->set_alignment(Gtk::ALIGN_LEFT, Gtk::ALIGN_CENTER);
         widget = lbl;
@@ -547,6 +548,7 @@ Gtk::Widget* ColorItem::getPreview(PreviewStyle style, ViewType view, ::PreviewS
         Gtk::Widget* newBlot = Glib::wrap(eekWidget);
 
         eek_preview_set_color( preview, (def.getR() << 8) | def.getR(), (def.getG() << 8) | def.getG(), (def.getB() << 8) | def.getB());
+        preview->_isRemove = _isRemove;
 
         eek_preview_set_details( preview, (::PreviewStyle)style, (::ViewType)view, (::PreviewSize)size, ratio );
         eek_preview_set_linked( preview, (LinkType)((_linkSrc ? PREVIEW_LINK_IN:0)
@@ -658,25 +660,29 @@ Gtk::Widget* ColorItem::getPreview(PreviewStyle style, ViewType view, ::PreviewS
 void ColorItem::buttonClicked(bool secondary)
 {
     SPDesktop *desktop = SP_ACTIVE_DESKTOP;
-    if (desktop) {
-        char const * attrName = secondary ? "stroke" : "fill";
+    if (!desktop) return;
+    char const * attrName = secondary ? "stroke" : "fill";
+
+    gchar c[64];
+    if (!_isRemove){
         guint32 rgba = (def.getR() << 24) | (def.getG() << 16) | (def.getB() << 8) | 0xff;
-        gchar c[64];
         sp_svg_write_color(c, sizeof(c), rgba);
+    }
 
-        SPCSSAttr *css = sp_repr_css_attr_new();
-        sp_repr_css_set_property( css, attrName, c );
-        sp_desktop_set_style(desktop, css);
+    SPCSSAttr *css = sp_repr_css_attr_new();
+    sp_repr_css_set_property( css, attrName, _isRemove ? "none" : c );
+    sp_desktop_set_style(desktop, css);
+    sp_repr_css_attr_unref(css);
 
-        sp_repr_css_attr_unref(css);
+    if (_isRemove){
         sp_document_done (sp_desktop_document (desktop), SP_VERB_DIALOG_SWATCHES, 
-                          secondary? _("Set stroke color from swatch") : _("Set fill color from swatch"));
+                      secondary? _("Remove stroke color") : _("Remove fill color"));
+    } else {
+        sp_document_done (sp_desktop_document (desktop), SP_VERB_DIALOG_SWATCHES, 
+                      secondary? _("Set stroke color from swatch") : _("Set fill color from swatch"));
     }
 }
 
-
-
-
 static char* trim( char* str ) {
     char* ret = str;
     while ( *str && (*str == ' ' || *str == '\t') ) {
@@ -1039,8 +1045,8 @@ SwatchesPanel::SwatchesPanel(gchar const* prefsPath) :
 {
     Gtk::RadioMenuItem* hotItem = 0;
     _holder = new PreviewHolder();
+    _remove = new ColorItem();
     loadEmUp();
-
     if ( !possible.empty() ) {
         JustForNow* first = 0;
         Glib::ustring targetName;
@@ -1065,12 +1071,14 @@ SwatchesPanel::SwatchesPanel(gchar const* prefsPath) :
             _holder->setColumnPref( first->_prefWidth );
         }
         _holder->freezeUpdates();
+        _holder->addPreview(_remove);
         for ( std::vector<ColorItem*>::iterator it = first->_colors.begin(); it != first->_colors.end(); it++ ) {
             _holder->addPreview(*it);
         }
         _holder->thawUpdates();
 
         Gtk::RadioMenuItem::Group groupOne;
+
         int i = 0;
         for ( std::vector<JustForNow*>::iterator it = possible.begin(); it != possible.end(); it++ ) {
             JustForNow* curr = *it;
@@ -1081,7 +1089,6 @@ SwatchesPanel::SwatchesPanel(gchar const* prefsPath) :
             _regItem( single, 3, i );
             i++;
         }
-
     }
 
 
@@ -1098,6 +1105,8 @@ SwatchesPanel::SwatchesPanel(gchar const* prefsPath) :
 
 SwatchesPanel::~SwatchesPanel()
 {
+    if (_remove) delete _remove;
+    if (_holder) delete _holder;
 }
 
 void SwatchesPanel::setOrientation( Gtk::AnchorType how )
@@ -1129,6 +1138,7 @@ void SwatchesPanel::_handleAction( int setId, int itemId )
                     _holder->setColumnPref( curr->_prefWidth );
                 }
                 _holder->freezeUpdates();
+                _holder->addPreview(_remove);
                 for ( std::vector<ColorItem*>::iterator it = curr->_colors.begin(); it != curr->_colors.end(); it++ ) {
                     _holder->addPreview(*it);
                 }
diff --git a/src/dialogs/swatches.h b/src/dialogs/swatches.h
index fc3c772b8..cc0cf8956 100644
--- a/src/dialogs/swatches.h
+++ b/src/dialogs/swatches.h
@@ -26,7 +26,6 @@ namespace Dialogs {
 
 void _loadPaletteFile( gchar const *filename );
 
-
 /**
  * The color swatch you see on screen as a clickable box.
  */
@@ -34,6 +33,7 @@ class ColorItem : public Inkscape::UI::Previewable
 {
     friend void _loadPaletteFile( gchar const *filename );
 public:
+    ColorItem();
     ColorItem( unsigned int r, unsigned int g, unsigned int b,
                Glib::ustring& name );
     virtual ~ColorItem();
@@ -72,6 +72,7 @@ private:
     Gtk::Tooltips tips;
     std::vector<Gtk::Widget*> _previews;
 
+    bool _isRemove;
     bool _isLive;
     bool _linkIsTone;
     int _linkPercent;
@@ -79,8 +80,8 @@ private:
     ColorItem* _linkSrc;
     std::vector<ColorItem*> _listeners;
 };
-
 	
+class RemoveColorItem;
 
 /**
  * A panel that displays color swatches.
@@ -104,6 +105,7 @@ private:
     static SwatchesPanel* instance;
 
     PreviewHolder* _holder;
+    ColorItem* _remove;
 };
 
 } //namespace Dialogs