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e6ecad548a
This will give us a single place to deal with the mechanics of how zoom works, and then our UI code can simply apply the value as necessary.
49 lines
2.0 KiB
C
49 lines
2.0 KiB
C
/* sp-zoom-manager.h
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*
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* Copyright (C) 2016 Christian Hergert <chergert@redhat.com>
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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 3 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
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef SP_ZOOM_MANAGER_H
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#define SP_ZOOM_MANAGER_H
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#include <glib-object.h>
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G_BEGIN_DECLS
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#define SP_TYPE_ZOOM_MANAGER (sp_zoom_manager_get_type())
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G_DECLARE_FINAL_TYPE (SpZoomManager, sp_zoom_manager, SP, ZOOM_MANAGER, GObject)
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SpZoomManager *sp_zoom_manager_new (void);
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gboolean sp_zoom_manager_get_can_zoom_in (SpZoomManager *self);
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gboolean sp_zoom_manager_get_can_zoom_out (SpZoomManager *self);
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gboolean sp_zoom_manager_get_min_zoom (SpZoomManager *self);
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gboolean sp_zoom_manager_get_max_zoom (SpZoomManager *self);
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void sp_zoom_manager_set_min_zoom (SpZoomManager *self,
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gdouble min_zoom);
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void sp_zoom_manager_set_max_zoom (SpZoomManager *self,
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gdouble max_zoom);
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void sp_zoom_manager_zoom_in (SpZoomManager *self);
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void sp_zoom_manager_zoom_out (SpZoomManager *self);
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void sp_zoom_manager_reset (SpZoomManager *self);
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gdouble sp_zoom_manager_get_zoom (SpZoomManager *self);
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void sp_zoom_manager_set_zoom (SpZoomManager *self,
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gdouble zoom);
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G_END_DECLS
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#endif /* SP_ZOOM_MANAGER_H */
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