gtkTtk_RadioButton.cpp

/*
 *  gtkTtk_RadioButton.cpp
 * ------------------------
 *
 * This file is part of the gtkTtk package, a Tk/Tile based theme that uses
 * Gtk/GNOME for drawing.
 *
 * Copyright (C) 2004-2008 by:
 * Georgios Petasis, petasis@iit.demokritos.gr,
 * Software and Knowledge Engineering Laboratory,
 * Institute of Informatics and Telecommunications,
 * National Centre for Scientific Research (NCSR) "Demokritos",
 * Aghia Paraskevi, 153 10, Athens, Greece.
 */

#include "gtkTtk_Utilities.h"
#include "gtkTtk_TkHeaders.h"
#include "gtkTtk_WidgetDefaults.h"

typedef struct {
} RadioButtonIndicatorElement;


static Ttk_ElementOptionSpec RadioButtonIndicatorElementOptions[] = {
    {NULL}
};

static void RadioButtonIndicatorElementGeometry(
    void *clientData, void *elementRecord, Tk_Window tkwin,
    int *widthPtr, int *heightPtr, Ttk_Padding *paddingPtr)
{
    GTKTTK_WIDGET_CACHE_DEFINITION;
    gint size, spacing = RadioButtonHorizontalPadding;
    gint focus_width, focus_pad;
    GTKTTK_ENSURE_GTK_STYLE_ENGINE_ACTIVE;
    GtkWidget *widget = GtkTtk_GetRadioButton(wc);
    GTKTTK_ENSURE_WIDGET_OK;
    GtkTtk_gtk_widget_style_get(widget,
           "indicator-size",    &size,
           "indicator-spacing", &spacing,
           "focus-line-width",  &focus_width,
           "focus-padding",     &focus_pad, NULL);
    *widthPtr = size+focus_width+focus_pad;
    *heightPtr = size+spacing*2+focus_pad;
    size = focus_width;
    *paddingPtr = Ttk_MakePadding(*heightPtr, size, *widthPtr, size);
}

static void RadioButtonIndicatorElementDraw(
    void *clientData, void *elementRecord, Tk_Window tkwin,
    Drawable d, Ttk_Box b, unsigned state)
{
    GTKTTK_GTK_DRAWABLE_DEFINITIONS;
    gint indicator_size, x, y;
    const gint MAGIC_HEIGHT_WIDTH_COMPLEMENT = 40;
    GTKTTK_ENSURE_GTK_STYLE_ENGINE_ACTIVE;
    GtkWidget *widget = GtkTtk_GetRadioButton(wc);
    GTKTTK_ENSURE_WIDGET_OK;
    GTKTTK_DRAWABLE_FROM_WIDGET_SIZE(b.width+MAGIC_HEIGHT_WIDTH_COMPLEMENT,
				    b.height+MAGIC_HEIGHT_WIDTH_COMPLEMENT);
    GTKTTK_STYLE_BACKGROUND_DEFAULT;
    GTKTTK_DEFAULT_BACKGROUND_SIZE(b.width+MAGIC_HEIGHT_WIDTH_COMPLEMENT,
                    b.height+MAGIC_HEIGHT_WIDTH_COMPLEMENT);
    GTKTTK_STYLE_FROM_WIDGET;
    GTKTTK_WIDGET_SET_FOCUS(widget);
    GtkTtk_gtk_widget_style_get(widget,
           "indicator-size", &indicator_size, NULL);
    GtkTtk_StateShadowTableLookup(NULL, state, gtkState, gtkShadow,
            GTKTTK_SECTION_BUTTONS|GTKTTK_SECTION_ALL);
    // GtkTtk_StateInfo(state, gtkState, gtkShadow, tkwin, widget);
    x = (b.width  - indicator_size) / 2;
    y = (b.height - indicator_size) / 2;
    GtkTtk_gtk_paint_option(style, gdkDrawable, gtkState, gtkShadow, NULL,
            widget, "radiobutton", x, y, indicator_size, indicator_size);
    GtkTtk_CopyGtkPixmapOnToDrawable(gdkDrawable, d, tkwin,
            0, 0, b.width, b.height, b.x, b.y);
    GTKTTK_CLEANUP_GTK_DRAWABLE;
}

static Ttk_ElementSpec RadioButtonIndicatorElementSpec = {
    TK_STYLE_VERSION_2,
    sizeof(RadioButtonIndicatorElement),
    RadioButtonIndicatorElementOptions,
    RadioButtonIndicatorElementGeometry,
    RadioButtonIndicatorElementDraw
};

typedef struct {
} RadioButtonBorderElement;


static Ttk_ElementOptionSpec RadioButtonBorderElementOptions[] = {
    {NULL}
};

static void RadioButtonBorderElementGeometry(
    void *clientData, void *elementRecord, Tk_Window tkwin,
    int *widthPtr, int *heightPtr, Ttk_Padding *paddingPtr)
{
    GTKTTK_WIDGET_CACHE_DEFINITION;
    gint focus_width;
    gint focus_pad;
    GTKTTK_ENSURE_GTK_STYLE_ENGINE_ACTIVE;
    GtkWidget *widget = GtkTtk_GetRadioButton(wc);
    GTKTTK_ENSURE_WIDGET_OK;
    GtkTtk_gtk_widget_style_get(widget,
           "focus-line-width", &focus_width,
           "focus-padding",    &focus_pad, NULL);
    *paddingPtr = Ttk_UniformPadding(focus_width + focus_pad);
}

static void RadioButtonBorderElementDraw(
    void *clientData, void *elementRecord, Tk_Window tkwin,
    Drawable d, Ttk_Box b, unsigned state)
{
    GTKTTK_GTK_DRAWABLE_DEFINITIONS;
    GTKTTK_ENSURE_GTK_STYLE_ENGINE_ACTIVE;
    GtkWidget *widget = GtkTtk_GetRadioButton(wc);
    GTKTTK_ENSURE_WIDGET_OK;
    GTKTTK_DRAWABLE_FROM_WIDGET;
    GTKTTK_STYLE_BACKGROUND_DEFAULT;
    GTKTTK_DEFAULT_BACKGROUND;
    if (state & TTK_STATE_FOCUS) {
      gint border_width = ((GtkContainer*) widget)->border_width;
      gint focus_width;
      gint focus_pad;
      GTKTTK_STYLE_FROM_WIDGET;
      GTKTTK_WIDGET_SET_FOCUS(widget);
      GtkTtk_StateShadowTableLookup(NULL, state, gtkState, gtkShadow,
            GTKTTK_SECTION_BUTTONS|GTKTTK_SECTION_ALL);
      GtkTtk_gtk_widget_style_get(widget,
           "focus-line-width", &focus_width,
           "focus-padding",    &focus_pad, NULL);
      GtkTtk_gtk_paint_focus(style, gdkDrawable, gtkState, NULL, widget,
              "radiobutton", b.x + border_width, b.y + border_width,
               b.width - 2 * border_width, b.height - 2 * border_width);
    }
    GtkTtk_CopyGtkPixmapOnToDrawable(gdkDrawable, d, tkwin,
                   0, 0, b.width, b.height, b.x, b.y);
    GTKTTK_CLEANUP_GTK_DRAWABLE;
}

static Ttk_ElementSpec RadioButtonBorderElementSpec = {
    TK_STYLE_VERSION_2,
    sizeof(RadioButtonBorderElement),
    RadioButtonBorderElementOptions,
    RadioButtonBorderElementGeometry,
    RadioButtonBorderElementDraw
};


/*------------------------------------------------------------------------
 * +++ Widget layout.
 */

/* 
 * TTK_BEGIN_LAYOUT(RadiobuttonLayout)
 *      TTK_GROUP("Radiobutton.border", TTK_FILL_BOTH,
 *          TTK_GROUP("Radiobutton.padding", TTK_FILL_BOTH,
 *              TTK_NODE("Radiobutton.indicator", TTK_PACK_LEFT)
 *              TTK_GROUP("Radiobutton.focus", TTK_PACK_LEFT,
 *                  TTK_NODE("Radiobutton.label", TTK_FILL_BOTH))))
 * TTK_END_LAYOUT
 */
TTK_BEGIN_LAYOUT(RadiobuttonLayout)
  TTK_GROUP("Radiobutton.border", TTK_FILL_BOTH,
    TTK_GROUP("Radiobutton.padding", TTK_FILL_BOTH,
      TTK_NODE("Radiobutton.indicator", TTK_PACK_LEFT)
      TTK_NODE("Radiobutton.label", TTK_PACK_LEFT|TTK_STICK_W|TTK_FILL_BOTH)))
TTK_END_LAYOUT

int GtkTtk_Init_RadioButton(Tcl_Interp *interp,
                       GtkTtk_WidgetCache **wc, Ttk_Theme themePtr)
{
    /*
     * Register elements:
     */
    Ttk_RegisterElement(interp, themePtr, "Radiobutton.border",
            &RadioButtonBorderElementSpec, (void *) wc[0]);
    Ttk_RegisterElement(interp, themePtr, "Radiobutton.indicator",
            &RadioButtonIndicatorElementSpec, (void *) wc[0]);
    
    /*
     * Register layouts:
     */
    Ttk_RegisterLayout(themePtr, "TRadiobutton", RadiobuttonLayout);
    
    return TCL_OK;
}; /* GtkTtk_Init_RadioButton */