120 lines
3.5 KiB
C
120 lines
3.5 KiB
C
/*
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* Copyright (C) 2010-2011 Daiki Ueno <ueno@unixuser.org>
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* Copyright (C) 2010-2011 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*/
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/**
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* SECTION:eek-layout
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* @short_description: Base class of a layout engine
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*
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* The #EekLayout class is a base class of layout engine which
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* arranges keyboard elements.
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*/
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#include "config.h"
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#include "eek-layout.h"
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#include "eek-keyboard.h"
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#include "eekboard/eekboard-context-service.h"
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#include "eek-xml-layout.h"
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G_DEFINE_ABSTRACT_TYPE (EekLayout, eek_layout, G_TYPE_OBJECT)
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static void
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eek_layout_class_init (EekLayoutClass *klass)
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{
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klass->create_keyboard = NULL;
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}
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void
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eek_layout_init (EekLayout *self)
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{
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}
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const double row_spacing = 7.0;
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struct place_data {
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double desired_width;
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double current_offset;
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// Needed for outline (bounds) retrieval
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LevelKeyboard *keyboard;
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};
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static void
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row_placer(gpointer item, gpointer user_data)
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{
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struct place_data *data = (struct place_data*)user_data;
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struct squeek_row *row = item;
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EekBounds row_bounds = {
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.x = 0,
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.y = 0,
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.width = data->desired_width,
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.height = 0,
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};
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squeek_row_set_bounds(row, row_bounds);
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// Gather up all the keys in a row and adjust their bounds.
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eek_row_place_buttons(row, data->keyboard);
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row_bounds = squeek_row_get_bounds(row);
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row_bounds.y = data->current_offset;
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squeek_row_set_bounds(row, row_bounds);
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data->current_offset += row_bounds.height + row_spacing;
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}
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static void
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row_counter(gpointer item, gpointer user_data) {
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double *total_height = user_data;
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struct squeek_row *row = item;
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EekBounds row_bounds = squeek_row_get_bounds(row);
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*total_height += row_bounds.height + row_spacing;
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}
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void
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eek_layout_place_rows(LevelKeyboard *keyboard, EekKeyboard *level)
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{
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/* Order rows */
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// This needs to be done after outlines, because outlines define key sizes
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// TODO: do this only for rows without bounds
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// The keyboard width is given by the user via screen size. The height will be given dynamically.
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// TODO: calculate max line width beforehand for button centering. Leave keyboard centering to the renderer later
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EekBounds keyboard_bounds = {0};
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eek_element_get_bounds(EEK_ELEMENT(level), &keyboard_bounds);
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struct place_data placer_data = {
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.desired_width = keyboard_bounds.width,
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.current_offset = 0,
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.keyboard = keyboard,
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};
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eek_keyboard_foreach(level, row_placer, &placer_data);
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double total_height = 0;
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eek_keyboard_foreach(level, row_counter, &total_height);
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keyboard_bounds.height = total_height;
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eek_element_set_bounds(EEK_ELEMENT(level), &keyboard_bounds);
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}
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void
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eek_layout_update_layout(LevelKeyboard *keyboard)
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{
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eek_layout_place_rows(keyboard, level_keyboard_current(keyboard));
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}
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