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462
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1 /* gtk-xemacs.c
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2 **
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3 ** Description: A widget to encapsulate a XEmacs 'text widget'
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4 **
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5 ** Created by: William M. Perry
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6 ** Copyright (c) 2000 William M. Perry <wmperry@gnu.org>
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7 **
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8 */
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9
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10 #include <config.h>
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11
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12 #include "lisp.h"
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13 #include "console-gtk.h"
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14 #include "objects-gtk.h"
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15 #include "gtk-xemacs.h"
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809
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16 #include "device.h"
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17 #include "glyphs.h"
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462
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18 #include "window.h"
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19 #include "faces.h"
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778
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20 #include "event-gtk.h"
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876
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21 #include "frame-impl.h"
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22 #include "console-gtk-impl.h"
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23 #include "device-impl.h"
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462
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24
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25 extern Lisp_Object Vmodeline_face;
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26 extern Lisp_Object Vscrollbar_on_left_p;
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27
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28 EXFUN (Fmake_image_instance, 4);
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29
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30 static void gtk_xemacs_class_init (GtkXEmacsClass *klass);
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31 static void gtk_xemacs_init (GtkXEmacs *xemacs);
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32 static void gtk_xemacs_size_allocate (GtkWidget *widget, GtkAllocation *allocaction);
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33 static void gtk_xemacs_draw (GtkWidget *widget, GdkRectangle *area);
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34 static void gtk_xemacs_paint (GtkWidget *widget, GdkRectangle *area);
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35 static void gtk_xemacs_size_request (GtkWidget *widget, GtkRequisition *requisition);
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36 static void gtk_xemacs_realize (GtkWidget *widget);
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37 static void gtk_xemacs_style_set (GtkWidget *widget, GtkStyle *previous_style);
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38 static gint gtk_xemacs_expose (GtkWidget *widget, GdkEventExpose *event);
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39
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40 guint
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41 gtk_xemacs_get_type (void)
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42 {
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43 static guint xemacs_type = 0;
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44
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45 if (!xemacs_type)
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46 {
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47 static const GtkTypeInfo xemacs_info =
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48 {
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49 "GtkXEmacs",
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50 sizeof (GtkXEmacs),
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51 sizeof (GtkXEmacsClass),
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52 (GtkClassInitFunc) gtk_xemacs_class_init,
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53 (GtkObjectInitFunc) gtk_xemacs_init,
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54 /* reserved_1 */ NULL,
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55 /* reserved_2 */ NULL,
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56 (GtkClassInitFunc) NULL,
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57 };
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58
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59 xemacs_type = gtk_type_unique (gtk_fixed_get_type (), &xemacs_info);
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60 }
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61
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62 return xemacs_type;
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63 }
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64
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65 static GtkWidgetClass *parent_class;
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66
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67 static void
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1204
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68 gtk_xemacs_class_init (GtkXEmacsClass *class_)
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462
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69 {
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70 GtkWidgetClass *widget_class;
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71
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1204
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72 widget_class = (GtkWidgetClass*) class_;
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462
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73 parent_class = (GtkWidgetClass *) gtk_type_class (gtk_fixed_get_type ());
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74
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75 widget_class->size_allocate = gtk_xemacs_size_allocate;
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76 widget_class->size_request = gtk_xemacs_size_request;
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77 widget_class->draw = gtk_xemacs_draw;
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78 widget_class->expose_event = gtk_xemacs_expose;
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79 widget_class->realize = gtk_xemacs_realize;
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80 widget_class->button_press_event = emacs_gtk_button_event_handler;
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81 widget_class->button_release_event = emacs_gtk_button_event_handler;
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82 widget_class->key_press_event = emacs_gtk_key_event_handler;
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83 widget_class->key_release_event = emacs_gtk_key_event_handler;
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84 widget_class->motion_notify_event = emacs_gtk_motion_event_handler;
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85 widget_class->style_set = gtk_xemacs_style_set;
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86 }
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87
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88 static void
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89 gtk_xemacs_init (GtkXEmacs *xemacs)
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90 {
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91 GTK_WIDGET_SET_FLAGS (xemacs, GTK_CAN_FOCUS);
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92 }
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93
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94 GtkWidget*
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95 gtk_xemacs_new (struct frame *f)
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96 {
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97 GtkXEmacs *xemacs;
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98
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99 xemacs = gtk_type_new (gtk_xemacs_get_type ());
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100 xemacs->f = f;
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101
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102 return GTK_WIDGET (xemacs);
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103 }
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104
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105 static void
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106 __nuke_background_items (GtkWidget *widget)
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107 {
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108 /* This bit of voodoo is here to get around the annoying flicker
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109 when GDK tries to futz with our background pixmap as well as
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110 XEmacs doing it
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111
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112 We do NOT set the background of this widget window, that way
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113 there is NO flickering, etc. The downside is the XEmacs frame
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114 appears as 'seethru' when XEmacs is too busy to redraw the
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115 frame.
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116
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117 Well, wait, we do... otherwise there sre weird 'seethru' areas
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118 even when XEmacs does a full redisplay. Most noticable in some
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119 areas of the modeline, or in the right-hand-side of the window
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120 between the scrollbar ad n the edge of the window.
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121 */
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122 if (widget->window)
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123 {
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124 gdk_window_set_back_pixmap (widget->window, NULL, 0);
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125 gdk_window_set_back_pixmap (widget->parent->window, NULL, 0);
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126 gdk_window_set_background (widget->parent->window,
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127 &widget->style->bg[GTK_STATE_NORMAL]);
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128 gdk_window_set_background (widget->window,
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129 &widget->style->bg[GTK_STATE_NORMAL]);
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130 }
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131 }
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132
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133 extern Lisp_Object xemacs_gtk_convert_color(GdkColor *c, GtkWidget *w);
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134
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135 /* From objects-gtk.c */
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136 extern Lisp_Object __get_gtk_font_truename (GdkFont *gdk_font, int expandp);
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137
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138 #define convert_font(f) __get_gtk_font_truename (f, 0)
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139
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778
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140 #ifdef SMASH_FACE_FALLBACKS
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462
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141 static void
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142 smash_face_fallbacks (struct frame *f, GtkStyle *style)
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143 {
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144 #define FROB(face,prop,slot) do { \
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145 Lisp_Object fallback = Qnil; \
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146 Lisp_Object specifier = Fget (face, prop, Qnil); \
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147 struct Lisp_Specifier *sp = NULL; \
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148 if (NILP (specifier)) continue; \
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149 sp = XSPECIFIER (specifier); \
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150 fallback = sp->fallback; \
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151 if (EQ (Fcar (Fcar (Fcar (fallback))), Qgtk)) \
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152 fallback = XCDR (fallback); \
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153 if (! NILP (slot)) \
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154 fallback = acons (list1 (Qgtk), \
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155 slot, \
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156 fallback); \
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157 set_specifier_fallback (specifier, fallback); \
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158 } while (0);
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159 #define FROB_FACE(face,fg_slot,bg_slot) \
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160 do { \
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161 FROB (face, Qforeground, xemacs_gtk_convert_color (&style->fg_slot[GTK_STATE_NORMAL], FRAME_GTK_SHELL_WIDGET (f))); \
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162 FROB (face, Qbackground, xemacs_gtk_convert_color (&style->bg_slot[GTK_STATE_NORMAL], FRAME_GTK_SHELL_WIDGET (f))); \
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163 if (style->rc_style && style->rc_style->bg_pixmap_name[GTK_STATE_NORMAL]) \
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164 { \
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165 FROB (Vdefault_face, Qbackground_pixmap, \
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166 Fmake_image_instance (build_string (style->rc_style->bg_pixmap_name[GTK_STATE_NORMAL]), \
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167 f->device, Qnil, make_int (5))); \
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168 } \
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169 else \
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170 { \
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171 FROB (Vdefault_face, Qbackground_pixmap, Qnil); \
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172 } \
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173 } while (0)
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174
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175 FROB (Vdefault_face, Qfont, convert_font (style->font));
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176 FROB_FACE (Vdefault_face, fg, bg);
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177 FROB_FACE (Vgui_element_face, text, mid);
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178
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179 #undef FROB
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180 #undef FROB_FACE
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181 }
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778
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182 #endif /* SMASH_FACE_FALLBACKS */
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462
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183
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184 #ifdef HAVE_SCROLLBARS
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185 static void
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186 smash_scrollbar_specifiers (struct frame *f, GtkStyle *style)
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187 {
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188 Lisp_Object frame;
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189 int slider_size = 0;
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190 int hsize, vsize;
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191 GtkRangeClass *klass;
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192
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793
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193 frame = wrap_frame (f);
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462
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194
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195 klass = (GtkRangeClass *) gtk_type_class (GTK_TYPE_SCROLLBAR);
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196 slider_size = klass->slider_width;
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197 hsize = slider_size + (style->klass->ythickness * 2);
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198 vsize = slider_size + (style->klass->xthickness * 2);
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199
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200 style = gtk_style_attach (style,
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201 GTK_WIDGET (DEVICE_GTK_APP_SHELL (XDEVICE (FRAME_DEVICE (f))))->window);
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202
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203 Fadd_spec_to_specifier (Vscrollbar_width, make_int (vsize), frame, Qnil, Qnil);
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204 Fadd_spec_to_specifier (Vscrollbar_height, make_int (hsize), frame, Qnil, Qnil);
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205 }
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206 #endif /* HAVE_SCROLLBARS */
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207
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744
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208 #ifdef HAVE_TOOLBARS
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209 extern Lisp_Object Vtoolbar_shadow_thickness;
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210
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211 static void
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212 smash_toolbar_specifiers(struct frame *f, GtkStyle *style)
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213 {
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214 Lisp_Object frame;
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215 GtkStyleClass *klass = (GtkStyleClass *) style->klass;
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216
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793
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217 frame = wrap_frame (f);
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744
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218
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219 Fadd_spec_to_specifier (Vtoolbar_shadow_thickness, make_int (klass->xthickness),
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220 Qnil, list2 (Qgtk, Qdefault), Qprepend);
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221 }
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222 #endif /* HAVE_TOOLBARS */
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223
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462
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224 static void
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225 gtk_xemacs_realize (GtkWidget *widget)
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226 {
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227 parent_class->realize (widget);
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228 gtk_xemacs_style_set (widget, gtk_widget_get_style (widget));
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229 }
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230
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231 static void
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232 gtk_xemacs_style_set (GtkWidget *widget, GtkStyle *previous_style)
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233 {
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234 GtkStyle *new_style = gtk_widget_get_style (widget);
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235 GtkXEmacs *x = GTK_XEMACS (widget);
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236
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237 parent_class->style_set (widget, previous_style);
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238
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239 if (x->f)
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240 {
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241 __nuke_background_items (widget);
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778
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242 #ifdef SMASH_FACE_FALLBACKS
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462
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243 smash_face_fallbacks (x->f, new_style);
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244 #endif
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744
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245 #ifdef HAVE_SCROLLBARS
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462
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246 smash_scrollbar_specifiers (x->f, new_style);
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744
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247 #endif
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248 #ifdef HAVE_TOOLBARS
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249 smash_toolbar_specifiers (x->f, new_style);
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250 #endif
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462
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251 }
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252 }
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253
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254 static void
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255 gtk_xemacs_size_request (GtkWidget *widget, GtkRequisition *requisition)
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256 {
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257 GtkXEmacs *x = GTK_XEMACS (widget);
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258 struct frame *f = GTK_XEMACS_FRAME (x);
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259 int width, height;
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260
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261 if (f)
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262 {
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263 char_to_pixel_size (f, FRAME_WIDTH (f), FRAME_HEIGHT (f),
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264 &width, &height);
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265 requisition->width = width;
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266 requisition->height = height;
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267 }
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268 else
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269 {
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270 parent_class->size_request (widget, requisition);
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271 }
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272 }
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273
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274 static void
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275 gtk_xemacs_size_allocate (GtkWidget *widget, GtkAllocation *allocation)
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276 {
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277 GtkXEmacs *x = GTK_XEMACS (widget);
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278 struct frame *f = GTK_XEMACS_FRAME (x);
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279 int columns, rows;
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280
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281 parent_class->size_allocate(widget, allocation);
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282
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283 if (f)
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284 {
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285 f->pixwidth = allocation->width;
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286 f->pixheight = allocation->height;
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287
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288 pixel_to_char_size (f,
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289 allocation->width,
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290 allocation->height, &columns, &rows);
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291
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292 change_frame_size (f, rows, columns, 1);
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293 }
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294 }
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295
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296 static void
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297 gtk_xemacs_paint (GtkWidget *widget, GdkRectangle *area)
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298 {
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299 GtkXEmacs *x = GTK_XEMACS (widget);
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300 struct frame *f = GTK_XEMACS_FRAME (x);
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301 gtk_redraw_exposed_area (f, area->x, area->y, area->width, area->height);
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302 }
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303
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304 static void
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305 gtk_xemacs_draw (GtkWidget *widget, GdkRectangle *area)
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306 {
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307 GtkFixed *fixed = GTK_FIXED (widget);
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308 GtkFixedChild *child;
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309 GdkRectangle child_area;
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310 GList *children;
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311
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312 /* I need to manually iterate over the children instead of just
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313 chaining to parent_class->draw() because it calls
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314 gtk_fixed_paint() directly, which clears the background window,
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315 which causes A LOT of flashing. */
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316
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317 gtk_xemacs_paint (widget, area);
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318
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319 children = fixed->children;
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320
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321 while (children)
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322 {
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323 child = children->data;
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324 children = children->next;
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325 /* #### This is what causes the scrollbar flickering!
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326 Evidently the scrollbars pretty much take care of drawing
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327 themselves in most cases. Then we come along and tell them
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328 to redraw again!
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329
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330 But if we just leave it out, then they do not get drawn
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331 correctly the first time!
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332
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333 Scrollbar flickering has been greatly helped by the
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334 optimizations in scrollbar-gtk.c /
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335 gtk_update_scrollbar_instance_status (), so this is not that
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336 big a deal anymore.
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337 */
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338 if (gtk_widget_intersect (child->widget, area, &child_area))
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339 {
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340 gtk_widget_draw (child->widget, &child_area);
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341 }
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342 }
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343 }
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344
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345 static gint
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346 gtk_xemacs_expose (GtkWidget *widget, GdkEventExpose *event)
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347 {
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348 GtkXEmacs *x = GTK_XEMACS (widget);
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349 struct frame *f = GTK_XEMACS_FRAME (x);
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350 GdkRectangle *a = &event->area;
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351
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352 /* This takes care of drawing the scrollbars, etc */
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353 parent_class->expose_event (widget, event);
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354
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355 /* Now draw the actual frame data */
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356 if (!check_for_ignored_expose (f, a->x, a->y, a->width, a->height) &&
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357 !find_matching_subwindow (f, a->x, a->y, a->width, a->height))
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358 gtk_redraw_exposed_area (f, a->x, a->y, a->width, a->height);
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359 return (TRUE);
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360 }
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361
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362 Lisp_Object
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363 xemacs_gtk_convert_color(GdkColor *c, GtkWidget *w)
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364 {
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365 char color_buf[255];
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366
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367 sprintf (color_buf, "#%04x%04x%04x", c->red, c->green, c->blue);
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368
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369 return (build_string (color_buf));
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370 }
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