/* * Copyright 2004 James Bursa <bursa@users.sourceforge.net> * * This file is part of NetSurf, http://www.netsurf-browser.org/ * * NetSurf 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; version 2 of the License. * * NetSurf 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/>. */ /** \file * Plotter styles. */ #ifndef _NETSURF_DESKTOP_PLOT_STYLE_H_ #define _NETSURF_DESKTOP_PLOT_STYLE_H_ #include <stdint.h> /* html widget colours */ #define WIDGET_BASEC 0xd9d9d9 #define WIDGET_BLOBC 0x000000 /* Darken a colour by taking three quarters of each channel's intensity */ #define darken_colour(c1) \ ((((3 * (c1 & 0xff00ff)) >> 2) & 0xff00ff) | \ (((3 * (c1 & 0x00ff00)) >> 2) & 0x00ff00)) /* Darken a colour by taking nine sixteenths of each channel's intensity */ #define double_darken_colour(c1) \ ((((9 * (c1 & 0xff00ff)) >> 4) & 0xff00ff) | \ (((9 * (c1 & 0x00ff00)) >> 4) & 0x00ff00)) /* Lighten a colour by taking 12/16ths of each channel's intensity * and adding a full 4/16ths intensity */ #define lighten_colour(c1) \ (((((3 * (c1 & 0xff00ff)) >> 2) + 0x400040) & 0xff00ff) | \ ((((3 * (c1 & 0x00ff00)) >> 2) + 0x004000) & 0x00ff00)) /* Lighten a colour by taking 9/16ths of each channel's intensity * and adding a full 7/16ths intensity */ #define double_lighten_colour(c1) \ (((((9 * (c1 & 0xff00ff)) >> 4) + 0x700070) & 0xff00ff) | \ ((((9 * (c1 & 0x00ff00)) >> 4) + 0x007000) & 0x00ff00)) /* Blend two colours by taking half the intensity of each channel in the first * colour and adding them to half the intensity of each channel in the second * colour */ #define blend_colour(c0, c1) \ (((((c0 & 0xff00ff) + (c1 & 0xff00ff)) >> 1) & 0xff00ff) | \ ((((c0 & 0x00ff00) + (c1 & 0x00ff00)) >> 1) & 0x00ff00)) /* Choose either black or white, depending on which is furthest from the * percieved lightness of the supplied colour, c0. */ #define colour_to_bw_furthest(c0) \ ((((((c0 & 0x0000ff) * 77) >> 8) + \ (((c0 & 0x00ff00) * 151) >> 16) + \ (((c0 & 0xff0000) * 28) >> 24)) > \ (0xff / 2)) ? 0x000000 : 0xffffff) /* Mix two colours according to the proportion given by p, where 0 <= p <= 255 * p = 0 gives result ==> c1, p = 255 gives result ==> c0 */ #define mix_colour(c0, c1, p) \ ((((((c1 & 0xff00ff) * (255 - p)) + \ ((c0 & 0xff00ff) * ( p)) ) >> 8) & 0xff00ff) | \ (((((c1 & 0x00ff00) * (255 - p)) + \ ((c0 & 0x00ff00) * ( p)) ) >> 8) & 0x00ff00)) /* get a bitmap pixel (image/bitmap.h) into a plot colour */ #define pixel_to_colour(b) \ b[0] | (b[1] << 8) | (b[2] << 16) | (b[3] << 24) /* Get the red channel from a colour */ #define red_from_colour(c) \ ((c ) & 0xff) /* Get the green channel from a colour */ #define green_from_colour(c) \ ((c >> 8) & 0xff) /* Get the blue channel from a colour */ #define blue_from_colour(c) \ ((c >> 16) & 0xff) /** * Colour type: XBGR */ typedef uint32_t colour; /** * Magical transparent value */ #define NS_TRANSPARENT 0x01000000 /** * Type of plot operation */ typedef enum { PLOT_OP_TYPE_NONE = 0, /**< No operation */ PLOT_OP_TYPE_SOLID, /**< Solid colour */ PLOT_OP_TYPE_DOT, /**< Dotted plot */ PLOT_OP_TYPE_DASH, /**< Dashed plot */ } plot_operation_type_t; /** * Plot style for stroke/fill plotters */ typedef struct { plot_operation_type_t stroke_type; /**< Stroke plot type */ int stroke_width; /**< Width of stroke, in pixels */ colour stroke_colour; /**< Colour of stroke */ plot_operation_type_t fill_type; /**< Fill plot type */ colour fill_colour; /**< Colour of fill */ } plot_style_t; /** * Generic font family type */ typedef enum { PLOT_FONT_FAMILY_SANS_SERIF = 0, PLOT_FONT_FAMILY_SERIF, PLOT_FONT_FAMILY_MONOSPACE, PLOT_FONT_FAMILY_CURSIVE, PLOT_FONT_FAMILY_FANTASY, PLOT_FONT_FAMILY_COUNT /**< Number of generic families */ } plot_font_generic_family_t; /** * Font plot flags */ typedef unsigned long plot_font_flags_t; #define FONTF_NONE 0 #define FONTF_ITALIC 1 #define FONTF_OBLIQUE 2 #define FONTF_SMALLCAPS 4 /** * Scaling factor for font sizes */ #define FONT_SIZE_SCALE 1024 /** * Font style for plotting */ typedef struct { plot_font_generic_family_t family; /**< Generic family to plot with */ int size; /**< Font size, in points * FONT_SIZE_SCALE */ int weight; /**< Font weight: value in range [100,900] as per CSS */ plot_font_flags_t flags; /**< Font flags */ colour background; /**< Background colour to blend to, if appropriate */ colour foreground; /**< Colour of text */ } plot_font_style_t; /* global fill styles */ extern plot_style_t *plot_style_fill_white; extern plot_style_t *plot_style_fill_red; extern plot_style_t *plot_style_fill_black; /* Box model debug outline styles for content, padding and margin edges */ extern plot_style_t const * const plot_style_content_edge; extern plot_style_t const * const plot_style_padding_edge; extern plot_style_t const * const plot_style_margin_edge; /* Broken object replacement styles */ extern plot_style_t const * const plot_style_broken_object; extern plot_font_style_t const * const plot_fstyle_broken_object; /* other styles */ extern plot_style_t *plot_style_caret; extern plot_style_t *plot_style_stroke_history; extern plot_style_t *plot_style_fill_wbasec; extern plot_style_t *plot_style_fill_darkwbasec; extern plot_style_t *plot_style_fill_lightwbasec; extern plot_style_t *plot_style_fill_wblobc; extern plot_style_t *plot_style_stroke_wblobc; extern plot_style_t *plot_style_stroke_darkwbasec; extern plot_style_t *plot_style_stroke_lightwbasec; /* Default font style */ extern plot_font_style_t const * const plot_style_font; #ifndef HISTORY_COLOUR_SELECTED #define HISTORY_COLOUR_SELECTED 0xFF0000 #endif #ifndef HISTORY_COLOUR_FOREGROUND #define HISTORY_COLOUR_FOREGROUND 0x333333 #endif #ifndef HISTORY_COLOUR_BACKGROUND #define HISTORY_COLOUR_BACKGROUND 0xFFFFFF #endif #ifndef HISTORY_COLOUR_LINES #define HISTORY_COLOUR_LINES HISTORY_COLOUR_FOREGROUND #endif #endif