73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
/*
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* \brief Support functions for drawing outlined labels
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* \author Norman Feske
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* \date 2006-08-22
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*/
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/*
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* Copyright (C) 2006-2013 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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#ifndef _DRAW_LABEL_H_
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#define _DRAW_LABEL_H_
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#include "canvas.h"
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extern Text_painter::Font default_font;
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/*
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* Gap between session label and view title in pixels
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*/
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enum { LABEL_GAP = 5 };
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/**
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* Draw black outline of string
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*/
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inline void draw_string_outline(Canvas_base &canvas, Point pos, char const *s)
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{
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for (int j = -1; j <= 1; j++)
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for (int i = -1; i <= 1; i++)
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if (i || j)
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canvas.draw_text(pos + Point(i, j), default_font, BLACK, s);
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}
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/**
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* Return bounding box of composed label displayed with the default font
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*
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* \param sl session label string
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* \param vt view title string
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*/
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inline Area label_size(const char *sl, const char *vt) {
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return Area(default_font.str_w(sl) + LABEL_GAP + default_font.str_w(vt) + 2,
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default_font.str_h(sl) + 2); }
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/**
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* Draw outlined view label
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*
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* View labels are composed of two parts: the session label and the view title.
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* The unforgeable session label is defined on session creation by system
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* policy. In contrast, the view title can individually be defined by the
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* application.
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*/
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static inline void draw_label(Canvas_base &canvas, Point pos,
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char const *session_label, Color session_label_color,
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char const *view_title, Color view_title_color)
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{
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pos = pos + Point(1, 1);
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draw_string_outline(canvas, pos, session_label);
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canvas.draw_text(pos, default_font, session_label_color, session_label);
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pos = pos + Point(default_font.str_w(session_label) + LABEL_GAP, 0);
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draw_string_outline(canvas, pos, view_title);
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canvas.draw_text(pos, default_font, view_title_color, view_title);
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}
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#endif /* _DRAW_LABEL_H_ */
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