Initial commit

engines/m4/adv_r/adv_scale.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "m4/adv_r/adv_scale.h"
+#include "m4/core/errors.h"
+#include "m4/graphics/gr_pal.h"
+#include "m4/graphics/gr_line.h"
+#include "m4/gui/gui_vmng.h"
+#include "m4/vars.h"
+
+namespace M4 {
+
+#define LABEL_OFFSET 8
+#define _GS(X) _G(scale)._##X
+
+static void scale_editor_clear_rects() {
+	_GS(old_front) = _GS(old_back) = -1;
+	_GS(myback) = _GS(myfront) = _GS(mybs) = _GS(myfs) = -1;
+}
+
+static void scale_editor_init() {
+	scale_editor_clear_rects();
+}
+
+static void scale_editor_undraw() {
+	Buffer *scr_orig = _G(game_bgBuff)->get_buffer();
+	Buffer *game_buff = _G(gameDrawBuff)->get_buffer();
+	int32 status;
+	ScreenContext *game_buff_ptr = vmng_screen_find(_G(gameDrawBuff), &status);
+
+	if (_GS(old_back) != -1) {
+		gr_buffer_rect_copy_2(scr_orig, game_buff, 0, _GS(old_back) - LABEL_OFFSET, 0,
+			_GS(old_back) - LABEL_OFFSET, scr_orig->w, LABEL_OFFSET + 1);
+		RestoreScreensInContext(0, _GS(old_back) - LABEL_OFFSET, scr_orig->w, _GS(old_back) + 1, game_buff_ptr);
+		_GS(old_back) = -1;
+	}
+	if (_GS(old_front) != -1) {
+		gr_buffer_rect_copy_2(scr_orig, game_buff, 0, _GS(old_front) - LABEL_OFFSET, 0,
+			_GS(old_front) - LABEL_OFFSET, scr_orig->w, LABEL_OFFSET + 1);
+		RestoreScreensInContext(0, _GS(old_front) - LABEL_OFFSET, scr_orig->w, _GS(old_front) + 1, game_buff_ptr);
+		_GS(old_front) = -1;
+	}
+
+	_G(game_bgBuff)->release();
+	_G(gameDrawBuff)->release();
+	scale_editor_clear_rects();
+}
+
+void scale_editor_draw() {
+	bool bail = true;
+
+	// Have we drawn before?
+	if (_GS(myback) == -1 && _GS(myfront) == -1)
+		bail = false;
+
+	// Has back or front y changed?
+	if (bail && _GS(myback) != _G(currentSceneDef).back_y && _GS(myfront) != _G(currentSceneDef).front_y)
+		bail = false;
+
+	// Has back or front scale changed?
+	if (bail && _GS(mybs) != _G(currentSceneDef).back_scale && _GS(myfs) != _G(currentSceneDef).front_scale)
+		bail = false;
+
+	// No changes, don't draw.
+	if (bail)
+		return;
+
+	scale_editor_undraw();
+
+	Buffer *game_buff = _G(gameDrawBuff)->get_buffer();
+	int32 status;
+	ScreenContext *game_buff_ptr = vmng_screen_find(_G(gameDrawBuff), &status);
+
+	Buffer *scr_orig = _G(game_bgBuff)->get_buffer();
+
+	gr_color_set(__YELLOW);
+	_GS(myback) = _GS(old_back) = _G(currentSceneDef).back_y;
+	_GS(myfront) = _GS(old_front) = _G(currentSceneDef).front_y;
+	_GS(mybs) = _G(currentSceneDef).back_scale;
+	_GS(myfs) = _G(currentSceneDef).front_scale;
+	gr_hline(game_buff, 0, scr_orig->w, _GS(old_back));
+	gr_hline(game_buff, 0, scr_orig->w, _GS(old_front));
+
+	char string[20];
+	gr_font_set_color(__WHITE);
+	gr_font_set(_G(font_tiny));
+
+	Common::sprintf_s(string, "Front: %d, %d", _GS(old_front), _G(currentSceneDef).front_scale);
+	int x;
+	for (x = 10; x < scr_orig->w - 220; x += 400)
+		gr_font_write(game_buff, string, x, _GS(old_front) - LABEL_OFFSET, 0, 0);
+
+	Common::sprintf_s(string, "Back: %d, %d", _GS(old_back), _G(currentSceneDef).back_scale);
+	for (x = 110; x < scr_orig->w - 320; x += 400)
+		gr_font_write(game_buff, string, x, _GS(old_back) - LABEL_OFFSET, 0, 0);
+
+	RestoreScreensInContext(0, _GS(old_back) - LABEL_OFFSET, scr_orig->w, _GS(old_back) + 1, game_buff_ptr);
+	RestoreScreensInContext(0, _GS(old_front) - LABEL_OFFSET, scr_orig->w, _GS(old_front) + 1, game_buff_ptr);
+
+	_G(game_bgBuff)->release();
+	_G(gameDrawBuff)->release();
+}
+
+void scale_editor_cancel() {
+	scale_editor_undraw();
+	_G(editors_in_use) &= ~kScaleEditor;
+}
+
+void scale_editor_toggle() {
+	if (_G(editors_in_use) & kScaleEditor)
+		scale_editor_cancel();
+	else {
+		_G(editors_in_use) |= kScaleEditor;
+		scale_editor_init();
+	}
+}
+
+} // End of namespace M4