src/textblock.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
   2 /*
   3  * textblock.h:
   4  *
   5  * Contact:
   6  *   Moonlight List (moonlight-list@lists.ximian.com)
   7  *
   8  * Copyright 2007 Novell, Inc. (http://www.novell.com)
   9  *
  10  * See the LICENSE file included with the distribution for details.
  11  */
  12
  13 #ifndef __TEXTBLOCK_H__
  14 #define __TEXTBLOCK_H__
  15
  16 #include <glib.h>
  17 #include <cairo.h>
  18
  19 #include "frameworkelement.h"
  20 #include "downloader.h"
  21 #include "moon-path.h"
  22 #include "thickness.h"
  23 #include "fontfamily.h"
  24 #include "fontstretch.h"
  25 #include "fontstyle.h"
  26 #include "fontweight.h"
  27 #include "fontsource.h"
  28 #include "layout.h"
  29 #include "brush.h"
  30 #include "fonts.h"
  31
  32 #define TEXTBLOCK_FONT_FAMILY  "Portable User Interface"
  33 #define TEXTBLOCK_FONT_STRETCH FontStretchesNormal
  34 #define TEXTBLOCK_FONT_WEIGHT  FontWeightsNormal
  35 #define TEXTBLOCK_FONT_STYLE   FontStylesNormal
  36
  37 /* @Namespace=System.Windows.Documents */
  38 class Inline : public DependencyObject, public ITextAttributes {
  39         TextFontDescription *font;
  40         GPtrArray *downloaders;
  41         bool autogen;
  42
  43         void AddFontResource (const char *resource);
  44         void AddFontSource (Downloader *downloader);
  45
  46         void CleanupDownloaders ();
  47
  48         void DownloaderComplete (Downloader *downloader);
  49
  50         static void downloader_complete (EventObject *sender, EventArgs *calldata, gpointer closure);
  51
  52  protected:
  53         virtual ~Inline ();
  54
  55  public:
  56         /* @PropertyType=FontFamily,DefaultValue=FontFamily(TEXTBLOCK_FONT_FAMILY),GenerateAccessors */
  57         const static int FontFamilyProperty;
  58         /* @PropertyType=double,AutoCreator=CreateDefaultFontSize,GenerateAccessors */
  59         const static int FontSizeProperty;
  60         /* @PropertyType=FontStretch,DefaultValue=FontStretch(TEXTBLOCK_FONT_STRETCH),GenerateAccessors */
  61         const static int FontStretchProperty;
  62         /* @PropertyType=FontStyle,DefaultValue=FontStyle(TEXTBLOCK_FONT_STYLE),GenerateAccessors */
  63         const static int FontStyleProperty;
  64         /* @PropertyType=FontWeight,DefaultValue=FontWeight(TEXTBLOCK_FONT_WEIGHT),GenerateAccessors */
  65         const static int FontWeightProperty;
  66         /* @PropertyType=Brush,DefaultValue=new SolidColorBrush("black"),GenerateAccessors */
  67         const static int ForegroundProperty;
  68         /* @PropertyType=TextDecorations,DefaultValue=TextDecorationsNone,ManagedPropertyType=TextDecorationCollection,GenerateAccessors */
  69         const static int TextDecorationsProperty;
  70         /* @PropertyType=string,DefaultValue=\"en-US\",Version=2.0,ManagedPropertyType=XmlLanguage,Validator=NonNullValidator,GenerateAccessors */
  71         const static int LanguageProperty;
  72
  73         // internal properties to inherit the FontSource between inlines and textblocks
  74         /* @PropertyType=FontSource,GenerateManagedDP=false,GenerateAccessors */
  75         const static int FontSourceProperty;
  76
  77         /* @GenerateCBinding,GeneratePInvoke,ManagedAccess=Protected */
  78         Inline ();
  79
  80         virtual void OnPropertyChanged (PropertyChangedEventArgs *args, MoonError *error);
  81         virtual void OnSubPropertyChanged (DependencyProperty *prop, DependencyObject *obj, PropertyChangedEventArgs *subobj_args);
  82
  83         virtual bool PermitsMultipleParents () { return false; }
  84
  85         //
  86         // Property Accessors
  87         //
  88         void SetFontFamily (FontFamily *value);
  89         FontFamily *GetFontFamily ();
  90
  91         void SetLanguage (const char *lang);
  92         const char *GetLanguage ();
  93
  94         void SetFontSize (double value);
  95         double GetFontSize ();
  96
  97         void SetFontStretch (FontStretch *value);
  98         FontStretch *GetFontStretch ();
  99
 100         void SetFontStyle (FontStyle *value);
 101         FontStyle *GetFontStyle ();
 102
 103         void SetFontWeight (FontWeight *value);
 104         FontWeight *GetFontWeight ();
 105
 106         void SetFontSource (FontSource *source);
 107         FontSource *GetFontSource ();
 108
 109         void SetForeground (Brush *value);
 110         Brush *GetForeground ();
 111
 112         void SetTextDecorations (TextDecorations decorations);
 113         TextDecorations GetTextDecorations ();
 114
 115         //
 116         // Non-DependencyProperty Accessors
 117         //
 118         void SetAutogenerated (bool autogen) { this->autogen = autogen; }
 119         bool GetAutogenerated () { return autogen; }
 120
 121         //
 122         // ITextAttributes Interface Methods
 123         //
 124         virtual TextDecorations Decorations () { return GetTextDecorations (); }
 125         virtual TextFontDescription *FontDescription () { return font; }
 126         virtual Brush *Foreground (bool selected) { return GetForeground (); }
 127         virtual Brush *Background (bool selected) { return NULL; }
 128
 129         //
 130         // Convenience Methods
 131         //
 132         bool UpdateFontDescription (const char *source, bool force);
 133
 134         virtual bool Equals (Inline *item);
 135 };
 136
 137
 138 /* @Namespace=System.Windows.Documents */
 139 class LineBreak : public Inline {
 140  protected:
 141         virtual ~LineBreak () {}
 142
 143  public:
 144         /* @GenerateCBinding,GeneratePInvoke */
 145         LineBreak () { SetObjectType (Type::LINEBREAK); }
 146 };
 147
 148
 149 /* @ContentProperty="Text" */
 150 /* @Namespace=System.Windows.Documents */
 151 class Run : public Inline {
 152  protected:
 153         virtual ~Run () {}
 154
 155  public:
 156         /* @PropertyType=string,ManagedFieldAccess=Internal,GenerateAccessors */
 157         const static int TextProperty;
 158
 159         /* @GenerateCBinding,GeneratePInvoke */
 160         Run () { SetObjectType (Type::RUN); }
 161
 162         virtual bool Equals (Inline *item);
 163
 164         //
 165         // Property Accessors
 166         //
 167         void SetText (const char *text);
 168         const char *GetText ();
 169 };
 170
 171
 172 class TextBlockDynamicPropertyValueProvider;
 173
 174 /* @ContentProperty="Inlines" */
 175 /* @Namespace=System.Windows.Controls */
 176 class TextBlock : public FrameworkElement {
 177         friend class TextBlockDynamicPropertyValueProvider;
 178
 179         TextFontDescription *font;
 180         GPtrArray *downloaders;
 181         Downloader *source;
 182         TextLayout *layout;
 183         char *font_source;
 184
 185         double actual_height;
 186         double actual_width;
 187
 188         int setvalue:1;
 189         int was_set:1;
 190         int dirty:1;
 191
 192         void Layout (Size constraint);
 193         void Paint (cairo_t *cr);
 194
 195         char *GetTextInternal (InlineCollection *inlines);
 196         void SetTextInternal (const char *text);
 197
 198         void AddFontResource (const char *resource);
 199         void AddFontSource (Downloader *downloader);
 200
 201         void UpdateLayoutAttributes ();
 202         bool UpdateFontDescription (bool force);
 203         bool UpdateFontDescriptions (bool force);
 204
 205         void CleanupDownloaders (bool all);
 206
 207         void DownloaderComplete (Downloader *downloader);
 208
 209         static void downloader_complete (EventObject *sender, EventArgs *calldata, gpointer closure);
 210
 211  protected:
 212         virtual ~TextBlock ();
 213
 214  public:
 215         /* @PropertyType=FontFamily,DefaultValue=FontFamily(TEXTBLOCK_FONT_FAMILY),GenerateAccessors */
 216         const static int FontFamilyProperty;
 217         /* @PropertyType=double,AutoCreator=CreateDefaultFontSize,GenerateAccessors */
 218         const static int FontSizeProperty;
 219         /* @PropertyType=FontStretch,DefaultValue=FontStretch(TEXTBLOCK_FONT_STRETCH),GenerateAccessors */
 220         const static int FontStretchProperty;
 221         /* @PropertyType=FontStyle,DefaultValue=FontStyle(TEXTBLOCK_FONT_STYLE),GenerateAccessors */
 222         const static int FontStyleProperty;
 223         /* @PropertyType=FontWeight,DefaultValue=FontWeight(TEXTBLOCK_FONT_WEIGHT),GenerateAccessors */
 224         const static int FontWeightProperty;
 225         /* @PropertyType=FontSource,ManagedFieldAccess=Internal,Version=2.0,GenerateAccessors */
 226         const static int FontSourceProperty;
 227         /* @PropertyType=Brush,DefaultValue=new SolidColorBrush("black"),GenerateAccessors */
 228         const static int ForegroundProperty;
 229         /* @PropertyType=InlineCollection,AutoCreateValue,ManagedFieldAccess=Internal,ManagedSetterAccess=Internal,GenerateAccessors */
 230         const static int InlinesProperty;
 231         /* @PropertyType=string,DefaultValue=\"\",GenerateAccessors */
 232         const static int TextProperty;
 233         /* @PropertyType=double,DefaultValue=0.0,Version=2.0,GenerateAccessors */
 234         const static int LineHeightProperty;
 235         /* @PropertyType=LineStackingStrategy,DefaultValue=LineStackingStrategyMaxHeight,Version=2.0,GenerateAccessors */
 236         const static int LineStackingStrategyProperty;
 237         /* @PropertyType=Thickness,DefaultValue=Thickness (0),Version=2.0,GenerateAccessors */
 238         const static int PaddingProperty;
 239         /* @PropertyType=TextAlignment,DefaultValue=TextAlignmentLeft,Version=2.0,GenerateAccessors */
 240         const static int TextAlignmentProperty;
 241         /* @PropertyType=TextDecorations,DefaultValue=TextDecorationsNone,ManagedPropertyType=TextDecorationCollection,GenerateAccessors */
 242         const static int TextDecorationsProperty;
 243         /* @PropertyType=TextWrapping,DefaultValue=TextWrappingNoWrap,GenerateAccessors */
 244         const static int TextWrappingProperty;
 245
 246         /* @GenerateCBinding,GeneratePInvoke */
 247         TextBlock ();
 248
 249         void SetFontSource (Downloader *downloader);
 250
 251         //
 252         // Overrides
 253         //
 254         virtual void Render (cairo_t *cr, Region *region, bool path_only = false);
 255         virtual Size MeasureOverride (Size availableSize);
 256         virtual Size ArrangeOverride (Size finalSize);
 257         virtual Size ComputeActualSize ();
 258         virtual void ComputeBounds ();
 259         virtual Point GetTransformOrigin ();
 260         virtual void OnPropertyChanged (PropertyChangedEventArgs *args, MoonError *error);
 261         virtual void OnSubPropertyChanged (DependencyProperty *prop, DependencyObject *obj, PropertyChangedEventArgs *subobj_args);
 262         virtual void OnCollectionItemChanged (Collection *col, DependencyObject *obj, PropertyChangedEventArgs *args);
 263         virtual void OnCollectionChanged (Collection *col, CollectionChangedEventArgs *args);
 264         virtual bool CanFindElement () { return true; }
 265         virtual bool InsideObject (cairo_t *cr, double x, double y);
 266
 267         void SetFontFamily (FontFamily *family);
 268         FontFamily *GetFontFamily ();
 269
 270         void SetFontSize (double size);
 271         double GetFontSize ();
 272
 273         void SetFontStretch (FontStretch *stretch);
 274         FontStretch *GetFontStretch ();
 275
 276         void SetFontStyle (FontStyle *style);
 277         FontStyle *GetFontStyle ();
 278
 279         void SetFontWeight (FontWeight *weight);
 280         FontWeight *GetFontWeight ();
 281
 282         void SetFontSource (FontSource *source);
 283         FontSource *GetFontSource ();
 284
 285         void SetForeground (Brush *fg);
 286         Brush *GetForeground ();
 287
 288         void SetInlines (InlineCollection *inlines);
 289         InlineCollection *GetInlines ();
 290
 291         void SetLineHeight (double height);
 292         double GetLineHeight ();
 293
 294         void SetLineStackingStrategy (LineStackingStrategy strategy);
 295         LineStackingStrategy GetLineStackingStrategy ();
 296
 297         void SetPadding (Thickness *padding);
 298         Thickness *GetPadding ();
 299
 300         void SetText (const char *text);
 301         const char *GetText ();
 302
 303         void SetTextAlignment (TextAlignment alignment);
 304         TextAlignment GetTextAlignment ();
 305
 306         void SetTextDecorations (TextDecorations decorations);
 307         TextDecorations GetTextDecorations ();
 308
 309         void SetTextWrapping (TextWrapping wrapping);
 310         TextWrapping GetTextWrapping ();
 311 };
 312
 313 #endif /* __TEXTBLOCK_H__ */