386 lines
11 KiB
C
386 lines
11 KiB
C
/*
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* textbox.c - text box widget
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*
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* Copyright © 2007-2008 Julien Danjou <julien@danjou.info>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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*/
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#include "widget.h"
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#include "common/tokenize.h"
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/** The textbox private data structure */
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typedef struct
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{
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draw_text_context_t data;
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/** Textbox width */
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int width;
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/** Extents */
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area_t extents;
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PangoEllipsizeMode ellip;
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PangoWrapMode wrap;
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/** Border */
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struct
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{
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int width;
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xcolor_t color;
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} border;
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/** Text alignment */
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alignment_t align;
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/** Margin */
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padding_t margin;
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/** Background color */
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xcolor_t bg;
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/** Background image */
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image_t *bg_image;
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/** Background resize to wibox height. */
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bool bg_resize;
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/** Background alignment */
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alignment_t bg_align;
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} textbox_data_t;
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static area_t
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textbox_geometry(widget_t *widget, screen_t *screen, int height, int width)
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{
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area_t geometry;
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textbox_data_t *d = widget->data;
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geometry.height = height;
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if(d->width)
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geometry.width = d->width;
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else if(widget->align == AlignFlex)
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geometry.width = width;
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else if(d->bg_image)
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{
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double ratio = d->bg_resize ? (double) geometry.height / d->bg_image->height : 1;
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geometry.width = MIN(width, MAX(d->extents.width + d->margin.left + d->margin.right, MAX(d->width, d->bg_image->width * ratio)));
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}
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else
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geometry.width = MIN(d->extents.width + d->margin.left + d->margin.right, width);
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return geometry;
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}
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/** Draw a textbox widget.
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* \param widget The widget.
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* \param ctx The draw context.
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* \param p A pointer to the object we're draw onto.
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*/
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static void
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textbox_draw(widget_t *widget, draw_context_t *ctx, area_t geometry, wibox_t *p)
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{
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textbox_data_t *d = widget->data;
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color_t bg;
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color_t border_color;
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xcolor_to_color(&d->bg, &bg);
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xcolor_to_color(&d->border.color, &border_color);
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if(bg.initialized)
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draw_rectangle(ctx, geometry, 1.0, true, &bg);
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if(d->border.width > 0)
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draw_rectangle(ctx, geometry, d->border.width, false, &border_color);
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if(d->bg_image)
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{
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double ratio = d->bg_resize ? (double) geometry.height / d->bg_image->height : 1;
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/* check there is enough space to draw the image */
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if(ratio * d->bg_image->width <= geometry.width)
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{
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int x = geometry.x;
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int y = geometry.y;
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switch(d->bg_align)
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{
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case AlignCenter:
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x += (geometry.width - d->bg_image->width * ratio) / 2;
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break;
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case AlignRight:
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x += geometry.width - d->bg_image->width * ratio;
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break;
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case AlignBottom:
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y += geometry.height - d->bg_image->height * ratio;
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break;
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case AlignMiddle:
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y += (geometry.height - d->bg_image->height * ratio) / 2;
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break;
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default:
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break;
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}
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draw_image(ctx, x, y, ratio, d->bg_image);
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}
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}
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draw_text(ctx, &d->data, d->ellip, d->wrap, d->align, &d->margin, geometry, &d->extents);
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}
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/** Delete a textbox widget.
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* \param w The widget to destroy.
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*/
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static void
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textbox_destructor(widget_t *w)
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{
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textbox_data_t *d = w->data;
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image_unref(globalconf.L, d->bg_image);
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draw_text_context_wipe(&d->data);
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p_delete(&d);
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}
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static int
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luaA_textbox_margin(lua_State *L)
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{
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widget_t *widget = luaL_checkudata(L, 1, "widget");
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textbox_data_t *d = widget->data;
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if(lua_gettop(L) == 2)
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{
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d->margin = luaA_getopt_padding(L, 3, &d->margin);
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widget_invalidate_bywidget(widget);
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}
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return luaA_pushpadding(L, &d->margin);
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}
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/** Textbox widget.
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* \param L The Lua VM state.
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* \param token The key token.
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* \return The number of elements pushed on stack.
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* \luastack
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* \lfield text The text to display.
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* \lfield width The width of the textbox. Set to 0 for auto.
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* \lfield wrap The wrap mode: word, char, word_char.
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* \lfield ellipsize The ellipsize mode: start, middle or end.
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* \lfield border_width The border width to draw around.
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* \lfield border_color The border color.
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* \lfield align Text alignment, left, center or right.
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* \lfield margin Method to pass text margin: a table with top, left, right and bottom keys.
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* \lfield bg Background color.
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* \lfield bg_image Background image.
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* \lfield bg_align Background image alignment, left, center, right, bottom, top or middle
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* \lfield bg_resize Background resize.
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*/
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static int
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luaA_textbox_index(lua_State *L, awesome_token_t token)
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{
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widget_t *widget = luaL_checkudata(L, 1, "widget");
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textbox_data_t *d = widget->data;
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switch(token)
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{
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case A_TK_BG_RESIZE:
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lua_pushboolean(L, d->bg_resize);
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return 1;
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case A_TK_BG_ALIGN:
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lua_pushstring(L, draw_align_tostr(d->bg_align));
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return 1;
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case A_TK_BG_IMAGE:
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return image_push(L, d->bg_image);
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case A_TK_BG:
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return luaA_pushxcolor(L, &d->bg);
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case A_TK_MARGIN:
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lua_pushcfunction(L, luaA_textbox_margin);
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return 1;
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case A_TK_ALIGN:
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lua_pushstring(L, draw_align_tostr(d->align));
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return 1;
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case A_TK_BORDER_WIDTH:
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lua_pushnumber(L, d->border.width);
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return 1;
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case A_TK_BORDER_COLOR:
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luaA_pushxcolor(L, &d->border.color);
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return 1;
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case A_TK_TEXT:
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if(d->data.len > 0)
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{
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lua_pushlstring(L, d->data.text, d->data.len);
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return 1;
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}
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return 0;
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case A_TK_WIDTH:
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lua_pushnumber(L, d->width);
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return 1;
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case A_TK_WRAP:
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switch(d->wrap)
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{
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default:
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lua_pushliteral(L, "word");
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break;
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case A_TK_CHAR:
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lua_pushliteral(L, "char");
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break;
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case A_TK_WORD_CHAR:
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lua_pushliteral(L, "word_char");
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break;
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}
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return 1;
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case A_TK_ELLIPSIZE:
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switch(d->ellip)
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{
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case A_TK_START:
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lua_pushliteral(L, "start");
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break;
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case A_TK_MIDDLE:
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lua_pushliteral(L, "middle");
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break;
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default:
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lua_pushliteral(L, "end");
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break;
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}
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return 1;
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default:
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return 0;
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}
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}
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/** The __newindex method for a textbox object.
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* \param L The Lua VM state.
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* \param token The key token.
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* \return The number of elements pushed on stack.
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*/
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static int
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luaA_textbox_newindex(lua_State *L, awesome_token_t token)
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{
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size_t len = 0;
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widget_t *widget = luaL_checkudata(L, 1, "widget");
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const char *buf = NULL;
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textbox_data_t *d = widget->data;
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switch(token)
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{
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case A_TK_BG_ALIGN:
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buf = luaL_checklstring(L, 3, &len);
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d->bg_align = draw_align_fromstr(buf, len);
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break;
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case A_TK_BG_RESIZE:
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d->bg_resize = luaA_checkboolean(L, 3);
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break;
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case A_TK_BG_IMAGE:
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image_unref(L, d->bg_image);
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d->bg_image = image_ref(L);
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break;
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case A_TK_BG:
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if(lua_isnil(L, 3))
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p_clear(&d->bg, 1);
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else if((buf = luaL_checklstring(L, 3, &len)))
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xcolor_init_reply(xcolor_init_unchecked(&d->bg, buf, len));
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break;
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case A_TK_ALIGN:
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if((buf = luaL_checklstring(L, 3, &len)))
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d->align = draw_align_fromstr(buf, len);
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break;
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case A_TK_BORDER_COLOR:
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if((buf = luaL_checklstring(L, 3, &len)))
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xcolor_init_reply(xcolor_init_unchecked(&d->border.color, buf, len));
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break;
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case A_TK_BORDER_WIDTH:
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d->border.width = luaL_checknumber(L, 3);
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break;
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case A_TK_TEXT:
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if(lua_isnil(L, 3)
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|| (buf = luaL_checklstring(L, 3, &len)))
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{
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/* delete */
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draw_text_context_wipe(&d->data);
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p_clear(&d->data, 1);
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if(buf)
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{
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char *text;
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ssize_t tlen;
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/* if text has been converted to UTF-8 */
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if(draw_iso2utf8(buf, len, &text, &tlen))
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{
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draw_text_context_init(&d->data, text, tlen);
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p_delete(&text);
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}
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else
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draw_text_context_init(&d->data, buf, len);
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d->extents = draw_text_extents(&d->data);
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}
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else
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p_clear(&d->extents, 1);
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}
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break;
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case A_TK_WIDTH:
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d->width = luaL_checknumber(L, 3);
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break;
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case A_TK_WRAP:
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if((buf = luaL_checklstring(L, 3, &len)))
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switch(a_tokenize(buf, len))
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{
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case A_TK_WORD:
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d->wrap = PANGO_WRAP_WORD;
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break;
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case A_TK_CHAR:
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d->wrap = PANGO_WRAP_CHAR;
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break;
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case A_TK_WORD_CHAR:
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d->wrap = PANGO_WRAP_WORD_CHAR;
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break;
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default:
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break;
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}
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break;
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case A_TK_ELLIPSIZE:
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if((buf = luaL_checklstring(L, 3, &len)))
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switch(a_tokenize(buf, len))
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{
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case A_TK_START:
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d->ellip = PANGO_ELLIPSIZE_START;
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break;
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case A_TK_MIDDLE:
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d->ellip = PANGO_ELLIPSIZE_MIDDLE;
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break;
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case A_TK_END:
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d->ellip = PANGO_ELLIPSIZE_END;
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break;
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default:
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break;
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}
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break;
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default:
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return 0;
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}
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widget_invalidate_bywidget(widget);
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return 0;
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}
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/** Create a new textbox widget.
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* \param w The widget to initialize.
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* \return A brand new widget.
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*/
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widget_t *
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widget_textbox(widget_t *w)
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{
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w->align_supported |= AlignFlex;
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w->draw = textbox_draw;
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w->index = luaA_textbox_index;
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w->newindex = luaA_textbox_newindex;
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w->destructor = textbox_destructor;
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w->geometry = textbox_geometry;
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textbox_data_t *d = w->data = p_new(textbox_data_t, 1);
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d->ellip = PANGO_ELLIPSIZE_END;
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return w;
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}
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// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80
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