awesome/widgets/textbox.c

184 lines
4.8 KiB
C

/*
* textbox.c - text box widget
*
* Copyright © 2007-2008 Julien Danjou <julien@danjou.info>
*
* This program 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; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include "widget.h"
#include "common/tokenize.h"
extern awesome_t globalconf;
/** The textbox private data structure */
typedef struct
{
/** Textbox text */
char *text;
/** Textbox width */
int width;
} textbox_data_t;
/** Draw a textbox widget.
* \param ctx The draw context.
* \param screen The screen.
* \param w The widget node we are linked from.
* \param offset Offset to draw at.
* \param used The size used on the element.
* \param p A pointer to the object we're draw onto.
* \return The width used.
*/
static int
textbox_draw(draw_context_t *ctx, int screen __attribute__ ((unused)),
widget_node_t *w,
int offset, int used,
void *p __attribute__ ((unused)))
{
textbox_data_t *d = w->widget->data;
draw_parser_data_t pdata, *pdata_arg = NULL;
if(d->width)
w->area.width = d->width;
else if(w->widget->align == AlignFlex)
w->area.width = ctx->width - used;
else
{
draw_parser_data_init(&pdata);
w->area.width = MIN(draw_text_extents(ctx->connection,
ctx->phys_screen,
globalconf.font, d->text, &pdata).width,
ctx->width - used);
if(pdata.bg_image)
w->area.width = MAX(w->area.width, pdata.bg_resize ? w->area.height : pdata.bg_image->width);
pdata_arg = &pdata;
}
w->area.height = ctx->height;
w->area.x = widget_calculate_offset(ctx->width,
w->area.width,
offset,
w->widget->align);
w->area.y = 0;
draw_text(ctx, globalconf.font, w->area, d->text, pdata_arg);
if (pdata_arg)
draw_parser_data_wipe(pdata_arg);
return w->area.width;
}
/** Delete a textbox widget.
* \param w The widget to destroy.
*/
static void
textbox_destructor(widget_t *w)
{
textbox_data_t *d = w->data;
p_delete(&d->text);
p_delete(&d);
}
/** Set the text of a textbox.
* \param L The Lua VM state.
* \return The number of elements pushed on stack.
* \luastack
* \lvalue A widget.
* \lparam The text to set.
*/
static int
luaA_textbox_text_set(lua_State *L)
{
widget_t **widget = luaA_checkudata(L, 1, "widget");
const char *text = luaL_checkstring(L, 2);
textbox_data_t *d = (*widget)->data;
p_delete(&d->text);
a_iso2utf8(text, &d->text);
widget_invalidate_bywidget(*widget);
return 0;
}
/** Set the width of a textbox.
* \param L The Lua VM state.
* \return The number of elements pushed on stack.
* \luastack
* \lvalue A widget.
* \lparam The width to set.
*/
static int
luaA_textbox_width_set(lua_State *L)
{
widget_t **widget = luaA_checkudata(L, 1, "widget");
int width = luaL_checknumber(L, 2);
textbox_data_t *d = (*widget)->data;
d->width = width;
widget_invalidate_bywidget(*widget);
return 0;
}
/** The __index method for a textbox object.
* \param L The Lua VM state.
* \return The number of elements pushed on stack.
*/
static int
luaA_textbox_index(lua_State *L)
{
size_t len;
const char *attr = luaL_checklstring(L, 2, &len);
switch(a_tokenize(attr, len))
{
case A_TK_TEXT_SET:
lua_pushcfunction(L, luaA_textbox_text_set);
return 1;
case A_TK_WIDTH_SET:
lua_pushcfunction(L, luaA_textbox_width_set);
return 1;
default:
return 0;
}
}
/** Create a new textbox widget.
* \param align Widget alignment.
* \return A brand new widget.
*/
widget_t *
textbox_new(alignment_t align)
{
widget_t *w;
textbox_data_t *d;
w = p_new(widget_t, 1);
widget_common_new(w);
w->align = align;
w->draw = textbox_draw;
w->index = luaA_textbox_index;
w->destructor = textbox_destructor;
w->data = d = p_new(textbox_data_t, 1);
return w;
}
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