226 lines
5.6 KiB
C
226 lines
5.6 KiB
C
/*
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* imagebox.c - imagebox widget
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*
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* Copyright © 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 "titlebar.h"
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/** The imagebox private data structure */
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typedef struct
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{
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/** Imagebox image */
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image_t *image;
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color_t bg;
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alignment_t valign;
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bool resize;
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} imagebox_data_t;
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static area_t
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imagebox_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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imagebox_data_t *d = widget->data;
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if(d->image)
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{
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int iwidth = image_getwidth(d->image);
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int iheight = image_getheight(d->image);
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if(d->resize)
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{
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double ratio = (double) height / iheight;
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geometry.width = ratio * iwidth;
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if(geometry.width > width)
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{
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geometry.width = 0;
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geometry.height = 0;
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}
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else
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geometry.height = height;
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}
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else if(iwidth <= width)
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{
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geometry.width = iwidth;
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geometry.height = height;
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}
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else
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{
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geometry.width = 0;
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geometry.height = 0;
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}
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}
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else
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{
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geometry.width = 0;
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geometry.height = 0;
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}
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geometry.x = geometry.y = 0;
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return geometry;
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}
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/** Draw an image.
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* \param widget The widget.
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* \param ctx The draw context.
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* \param geometry The geometry we draw in.
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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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imagebox_draw(widget_t *widget, draw_context_t *ctx, area_t geometry, wibox_t *p)
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{
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imagebox_data_t *d = widget->data;
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if(d->image && geometry.width && geometry.height)
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{
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if(d->bg.initialized)
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draw_rectangle(ctx, geometry, 1.0, true, &d->bg);
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int y = geometry.y;
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int iheight = image_getheight(d->image);
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double ratio = d->resize ? (double) geometry.height / iheight : 1;
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switch(d->valign)
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{
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case AlignBottom:
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y += geometry.height - iheight;
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break;
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case AlignCenter:
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y += (geometry.height - iheight) / 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, geometry.x, y, ratio, d->image);
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}
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}
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/** Delete a imagebox 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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imagebox_destructor(widget_t *w)
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{
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imagebox_data_t *d = w->data;
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image_unref(globalconf.L, d->image);
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p_delete(&d);
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}
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/** Imagebox widget.
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* \param L The Lua VM state.
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* \param token The key token.
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* \param resize Resize image.
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* \param valign Vertical alignment, top, bottom or center.
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* \return The number of elements pushed on stack.
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* \luastack
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* \lfield image The image to display.
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* \lfield bg The background color to use.
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*/
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static int
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luaA_imagebox_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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imagebox_data_t *d = widget->data;
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switch(token)
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{
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case A_TK_IMAGE:
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image_push(L, d->image);
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break;
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case A_TK_BG:
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luaA_pushcolor(L, &d->bg);
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break;
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case A_TK_RESIZE:
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lua_pushboolean(L, d->resize);
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break;
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case A_TK_VALIGN:
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lua_pushstring(L, draw_align_tostr(d->valign));
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break;
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default:
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return 0;
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}
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return 1;
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}
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/** The __newindex method for a imagebox 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_imagebox_newindex(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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imagebox_data_t *d = widget->data;
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switch(token)
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{
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const char *buf;
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size_t len;
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case A_TK_IMAGE:
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image_unref(L, d->image);
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d->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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color_init_reply(color_init_unchecked(&d->bg, buf, len));
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break;
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case A_TK_RESIZE:
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d->resize = luaA_checkboolean(L, 3);
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break;
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case A_TK_VALIGN:
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if((buf = luaL_checklstring(L, 3, &len)))
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d->valign = draw_align_fromstr(buf, len);
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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 imagebox 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_imagebox(widget_t *w)
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{
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imagebox_data_t *d;
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w->draw = imagebox_draw;
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w->index = luaA_imagebox_index;
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w->newindex = luaA_imagebox_newindex;
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w->destructor = imagebox_destructor;
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w->geometry = imagebox_geometry;
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w->data = d = p_new(imagebox_data_t, 1);
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d->resize = true;
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d->valign = AlignTop;
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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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