mirror of https://github.com/odrling/Aegisub
76 lines
2.4 KiB
C++
76 lines
2.4 KiB
C++
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// Copyright (c) 2014, Thomas Goyne <plorkyeran@aegisub.org>
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//
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// Permission to use, copy, modify, and distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice appear in all copies.
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//
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// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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//
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// Aegisub Project http://www.aegisub.org/
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#include "text_selection_controller.h"
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#include <wx/stc/stc.h>
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void TextSelectionController::SetControl(wxStyledTextCtrl *ctrl) {
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this->ctrl = ctrl;
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if (ctrl)
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ctrl->Bind(wxEVT_STC_UPDATEUI, &TextSelectionController::UpdateUI, this);
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}
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TextSelectionController::~TextSelectionController() {
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if (ctrl) ctrl->Unbind(wxEVT_STC_UPDATEUI, &TextSelectionController::UpdateUI, this);
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}
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#define GET(var, new_value) do { \
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int tmp = new_value; \
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if (tmp != var) { \
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var = tmp; \
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changed = true; \
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} \
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} while(false)
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#define SET(var, new_value, Setter) do { \
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if (var != new_value) { \
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var = new_value; \
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if (ctrl) ctrl->Setter(var); \
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} \
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} while (false)
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void TextSelectionController::UpdateUI(wxStyledTextEvent &evt) {
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if (changing) return;
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bool changed = false;
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GET(insertion_point, ctrl->GetInsertionPoint());
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if (evt.GetUpdated() & wxSTC_UPDATE_SELECTION) {
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GET(selection_start, ctrl->GetSelectionStart());
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GET(selection_end, ctrl->GetSelectionEnd());
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}
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else {
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GET(selection_start, insertion_point);
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GET(selection_end, insertion_point);
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}
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if (changed) AnnounceSelectionChanged();
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}
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void TextSelectionController::SetInsertionPoint(int position) {
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changing = true;
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SET(insertion_point, position, SetInsertionPoint);
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changing = false;
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AnnounceSelectionChanged();
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}
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void TextSelectionController::SetSelection(int start, int end) {
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changing = true;
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SET(selection_start, start, SetSelectionStart);
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SET(selection_end, end, SetSelectionEnd);
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changing = false;
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AnnounceSelectionChanged();
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}
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