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Diffstat (limited to 'tikzit/src/gtk/EdgeStylesModel.m')
| -rw-r--r-- | tikzit/src/gtk/EdgeStylesModel.m | 346 |
1 files changed, 346 insertions, 0 deletions
diff --git a/tikzit/src/gtk/EdgeStylesModel.m b/tikzit/src/gtk/EdgeStylesModel.m new file mode 100644 index 0000000..835aa35 --- /dev/null +++ b/tikzit/src/gtk/EdgeStylesModel.m @@ -0,0 +1,346 @@ +/* + * Copyright 2012 Alex Merry <dev@randomguy3.me.uk> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#import "EdgeStylesModel.h" + +#import "CairoRenderContext.h" +#import "Edge.h" +#import "Edge+Render.h" +#import "EdgeStyle.h" +#import "Node.h" +#import "StyleManager.h" + +#import "gtkhelpers.h" + +#import <gdk-pixbuf/gdk-pixbuf.h> + +// {{{ Internal interfaces + +@interface EdgeStylesModel (Notifications) +- (void) edgeStylesReplaced:(NSNotification*)notification; +- (void) edgeStyleAdded:(NSNotification*)notification; +- (void) edgeStyleRemoved:(NSNotification*)notification; +- (void) observeValueForKeyPath:(NSString*)keyPath + ofObject:(id)object + change:(NSDictionary*)change + context:(void*)context; +@end + +@interface EdgeStylesModel (Private) +- (cairo_surface_t*) createEdgeIconSurface; +- (GdkPixbuf*) pixbufOfEdgeInStyle:(EdgeStyle*)style; +- (GdkPixbuf*) pixbufOfEdgeInStyle:(EdgeStyle*)style usingSurface:(cairo_surface_t*)surface; +- (void) addEdgeStyle:(EdgeStyle*)style; +- (void) addEdgeStyle:(EdgeStyle*)style usingSurface:(cairo_surface_t*)surface; +- (void) observeEdgeStyle:(EdgeStyle*)style; +- (void) stopObservingEdgeStyle:(EdgeStyle*)style; +- (void) clearEdgeStylesModel; +- (void) reloadEdgeStyles; +@end + +// }}} +// {{{ API + +@implementation EdgeStylesModel + ++ (id) modelWithStyleManager:(StyleManager*)m { + return [[[self alloc] initWithStyleManager:m] autorelease]; +} + +- (id) init { + [self release]; + return nil; +} + +- (id) initWithStyleManager:(StyleManager*)m { + self = [super init]; + + if (self) { + store = gtk_list_store_new (EDGE_STYLES_N_COLS, + G_TYPE_STRING, + GDK_TYPE_PIXBUF, + G_TYPE_POINTER); + g_object_ref_sink (store); + + [self setStyleManager:m]; + } + + return self; +} + +- (void) dealloc { + [[NSNotificationCenter defaultCenter] removeObserver:self]; + + [self clearEdgeStylesModel]; + g_object_unref (store); + [styleManager release]; + + [super dealloc]; +} + +- (GtkTreeModel*) model { + return GTK_TREE_MODEL (store); +} + +- (StyleManager*) styleManager { + return styleManager; +} + +- (void) setStyleManager:(StyleManager*)m { + if (m == nil) { + [NSException raise:NSInvalidArgumentException format:@"Style manager cannot be nil"]; + } + [m retain]; + + [[NSNotificationCenter defaultCenter] removeObserver:self name:nil object:styleManager]; + [[NSNotificationCenter defaultCenter] addObserver:self + selector:@selector(edgeStylesReplaced:) + name:@"EdgeStylesReplaced" + object:m]; + [[NSNotificationCenter defaultCenter] addObserver:self + selector:@selector(edgeStyleAdded:) + name:@"EdgeStyleAdded" + object:m]; + [[NSNotificationCenter defaultCenter] addObserver:self + selector:@selector(edgeStyleRemoved:) + name:@"EdgeStyleRemoved" + object:m]; + + [styleManager release]; + styleManager = m; + + [self reloadEdgeStyles]; +} + +- (EdgeStyle*) styleFromPath:(GtkTreePath*)path { + GtkTreeIter iter; + gtk_tree_model_get_iter (GTK_TREE_MODEL (store), &iter, path); + EdgeStyle *style = nil; + gtk_tree_model_get (GTK_TREE_MODEL (store), &iter, EDGE_STYLES_PTR_COL, &style, -1); + return style; +} + +- (GtkTreePath*) pathFromStyle:(EdgeStyle*)style { + GtkTreeModel *m = GTK_TREE_MODEL (store); + GtkTreeIter row; + if (gtk_tree_model_get_iter_first (m, &row)) { + do { + EdgeStyle *rowStyle; + gtk_tree_model_get (m, &row, EDGE_STYLES_PTR_COL, &rowStyle, -1); + if (style == rowStyle) { + return gtk_tree_model_get_path (m, &row); + } + } while (gtk_tree_model_iter_next (m, &row)); + } + return NULL; +} +@end + +// }}} +// {{{ Notifications + +@implementation EdgeStylesModel (Notifications) + +- (void) edgeStylesReplaced:(NSNotification*)notification { + [self reloadEdgeStyles]; +} + +- (void) edgeStyleAdded:(NSNotification*)notification { + [self addEdgeStyle:[[notification userInfo] objectForKey:@"style"]]; +} + +- (void) edgeStyleRemoved:(NSNotification*)notification { + EdgeStyle *style = [[notification userInfo] objectForKey:@"style"]; + + GtkTreeModel *model = GTK_TREE_MODEL (store); + GtkTreeIter row; + if (gtk_tree_model_get_iter_first (model, &row)) { + do { + EdgeStyle *rowStyle; + gtk_tree_model_get (model, &row, EDGE_STYLES_PTR_COL, &rowStyle, -1); + if (style == rowStyle) { + gtk_list_store_remove (store, &row); + [self stopObservingEdgeStyle:rowStyle]; + [rowStyle release]; + return; + } + } while (gtk_tree_model_iter_next (model, &row)); + } +} + +- (void) observeValueForKeyPath:(NSString*)keyPath + ofObject:(id)object + change:(NSDictionary*)change + context:(void*)context +{ + if ([object class] != [EdgeStyle class]) + return; + + EdgeStyle *style = object; + + GtkTreeModel *model = GTK_TREE_MODEL (store); + GtkTreeIter row; + if (gtk_tree_model_get_iter_first (model, &row)) { + do { + EdgeStyle *rowStyle; + gtk_tree_model_get (model, &row, EDGE_STYLES_PTR_COL, &rowStyle, -1); + if (style == rowStyle) { + if ([@"name" isEqual:keyPath]) { + gtk_list_store_set (store, &row, EDGE_STYLES_NAME_COL, [[style name] UTF8String], -1); + } else { + GdkPixbuf *pixbuf = [self pixbufOfEdgeInStyle:style]; + gtk_list_store_set (store, &row, EDGE_STYLES_ICON_COL, pixbuf, -1); + g_object_unref (pixbuf); + } + } + } while (gtk_tree_model_iter_next (model, &row)); + } +} +@end + +// }}} +// {{{ Private + +@implementation EdgeStylesModel (Private) +- (cairo_surface_t*) createEdgeIconSurface { + return cairo_image_surface_create (CAIRO_FORMAT_ARGB32, 48, 18); +} + +- (GdkPixbuf*) pixbufOfEdgeInStyle:(EdgeStyle*)style { + cairo_surface_t *surface = [self createEdgeIconSurface]; + GdkPixbuf *pixbuf = [self pixbufOfEdgeInStyle:style usingSurface:surface]; + cairo_surface_destroy (surface); + return pixbuf; +} + +- (GdkPixbuf*) pixbufOfEdgeInStyle:(EdgeStyle*)style usingSurface:(cairo_surface_t*)surface { + Transformer *transformer = [Transformer defaultTransformer]; + [transformer setFlippedAboutXAxis:YES]; + + int width = cairo_image_surface_get_width (surface); + int height = cairo_image_surface_get_height (surface); + NSRect pixbufBounds = NSMakeRect(0.0, 0.0, width, height); + NSRect graphBounds = [transformer rectFromScreen:pixbufBounds]; + + NSPoint start = NSMakePoint (NSMinX (graphBounds) + 0.1f, NSMidY (graphBounds)); + NSPoint end = NSMakePoint (NSMaxX (graphBounds) - 0.1f, NSMidY (graphBounds)); + Node *src = [Node nodeWithPoint:start]; + Node *tgt = [Node nodeWithPoint:end]; + Edge *e = [Edge edgeWithSource:src andTarget:tgt]; + [e setStyle:style]; + + CairoRenderContext *context = [[CairoRenderContext alloc] initForSurface:surface]; + [context clearSurface]; + [e renderBasicEdgeInContext:context withTransformer:transformer selected:NO]; + [context release]; + + return pixbuf_get_from_surface (surface); +} + +- (void) addEdgeStyle:(EdgeStyle*)style usingSurface:(cairo_surface_t*)surface { + GtkTreeIter iter; + gtk_list_store_append (store, &iter); + + GdkPixbuf *pixbuf = [self pixbufOfEdgeInStyle:style usingSurface:surface]; + gtk_list_store_set (store, &iter, + EDGE_STYLES_NAME_COL, [[style name] UTF8String], + EDGE_STYLES_ICON_COL, pixbuf, + EDGE_STYLES_PTR_COL, (gpointer)[style retain], + -1); + g_object_unref (pixbuf); + [self observeEdgeStyle:style]; +} + +- (void) addEdgeStyle:(EdgeStyle*)style { + cairo_surface_t *surface = [self createEdgeIconSurface]; + [self addEdgeStyle:style usingSurface:surface]; + cairo_surface_destroy (surface); +} + +- (void) observeEdgeStyle:(EdgeStyle*)style { + [style addObserver:self + forKeyPath:@"name" + options:NSKeyValueObservingOptionNew + context:NULL]; + [style addObserver:self + forKeyPath:@"thickness" + options:0 + context:NULL]; + [style addObserver:self + forKeyPath:@"headStyle" + options:0 + context:NULL]; + [style addObserver:self + forKeyPath:@"tailStyle" + options:0 + context:NULL]; + [style addObserver:self + forKeyPath:@"decorationStyle" + options:0 + context:NULL]; + [style addObserver:self + forKeyPath:@"colorRGB.red" + options:0 + context:NULL]; + [style addObserver:self + forKeyPath:@"colorRGB.green" + options:0 + context:NULL]; + [style addObserver:self + forKeyPath:@"colorRGB.blue" + options:0 + context:NULL]; +} + +- (void) stopObservingEdgeStyle:(EdgeStyle*)style { + [style removeObserver:self forKeyPath:@"name"]; + [style removeObserver:self forKeyPath:@"thickness"]; + [style removeObserver:self forKeyPath:@"headStyle"]; + [style removeObserver:self forKeyPath:@"tailStyle"]; + [style removeObserver:self forKeyPath:@"decorationStyle"]; + [style removeObserver:self forKeyPath:@"colorRGB.red"]; + [style removeObserver:self forKeyPath:@"colorRGB.green"]; + [style removeObserver:self forKeyPath:@"colorRGB.blue"]; +} + +- (void) clearEdgeStylesModel { + GtkTreeModel *model = GTK_TREE_MODEL (store); + GtkTreeIter row; + if (gtk_tree_model_get_iter_first (model, &row)) { + do { + EdgeStyle *rowStyle; + gtk_tree_model_get (model, &row, EDGE_STYLES_PTR_COL, &rowStyle, -1); + [self stopObservingEdgeStyle:rowStyle]; + [rowStyle release]; + } while (gtk_tree_model_iter_next (model, &row)); + } + gtk_list_store_clear (store); +} + +- (void) reloadEdgeStyles { + [self clearEdgeStylesModel]; + cairo_surface_t *surface = [self createEdgeIconSurface]; + for (EdgeStyle *style in [styleManager edgeStyles]) { + [self addEdgeStyle:style usingSurface:surface]; + } + cairo_surface_destroy (surface); +} +@end + +// }}} + +// vim:ft=objc:ts=8:et:sts=4:sw=4:foldmethod=marker |