/* ** imagescroller.cpp ** Scrolls through multiple fullscreen image pages, ** **--------------------------------------------------------------------------- ** Copyright 2019-220 Christoph Oelckers ** All rights reserved. ** ** Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions ** are met: ** ** 1. Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** 2. Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in the ** documentation and/or other materials provided with the distribution. ** 3. The name of the author may not be used to endorse or promote products ** derived from this software without specific prior written permission. ** ** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR ** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES ** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. ** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, ** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT ** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF ** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. **--------------------------------------------------------------------------- ** */ class ImageScrollerDescriptor : MenuDescriptor native { native Array mItems; native Font textFont; native TextureID textBackground; native Color textBackgroundBrightness; native double textScale; native bool mAnimatedTransition; native int virtWidth, virtHeight; } class ImageScrollerPage : MenuItemBase { int virtWidth, virtHeight; protected void DrawText(Font fnt, int color, double x, double y, String text) { screen.DrawText(fnt, color, x, y, text, DTA_VirtualWidth, virtWidth, DTA_VirtualHeight, virtHeight, DTA_FullscreenScale, FSMode_ScaleToFit43); } protected void DrawTexture(TextureID tex, double x, double y) { screen.DrawTexture(tex, true, x, y, DTA_VirtualWidth, virtWidth, DTA_VirtualHeight, virtHeight, DTA_FullscreenScale, FSMode_ScaleToFit43); } } //============================================================================= // // an image page // //============================================================================= class ImageScrollerPageImageItem : ImageScrollerPage { TextureID mTexture; void Init(ImageScrollerDescriptor desc, String patch) { Super.Init(); mTexture = TexMan.CheckForTexture(patch); } override void Drawer(bool selected) { Screen.DrawTexture(mTexture, true, 0, 0, DTA_FullscreenEx, FSMode_ScaleToFit43, DTA_LegacyRenderStyle, STYLE_Normal); } } //============================================================================= // // a simple text page // //============================================================================= class ImageScrollerPageTextItem : ImageScrollerPage { Font mFont; BrokenLines mText; TextureID mTexture; Color mBrightness; double mTextScale; void Init(ImageScrollerDescriptor desc, String txt, int y = -1) { Super.Init(); mTexture = desc.textBackground; mBrightness = desc.textBackgroundBrightness; mFont = desc.textFont; mTextScale = desc.textScale; virtWidth = desc.virtWidth; virtHeight = desc.virtHeight; mText = mFont.BreakLines(Stringtable.Localize(txt), virtWidth / mTextScale); mYpos = y >= 0? y : virtHeight / 2 - mText.Count() * mFont.GetHeight() / 2; } override void Drawer(bool selected) { Screen.DrawTexture(mTexture, true, 0, 0, DTA_FullscreenEx, FSMode_ScaleToFit43, DTA_LegacyRenderStyle, STYLE_Normal, DTA_Color, mBrightness); int fontheight = mFont.GetHeight() * mTextScale; let y = mYpos; let c = mText.Count(); for (int i = 0; i < c; i++) { screen.DrawText (mFont, Font.CR_UNTRANSLATED, virtWidth/2 - mText.StringWidth(i) * mTextScale / 2, y, mText.StringAt(i), DTA_ScaleX, mTextScale, DTA_ScaleY, mTextScale, DTA_VirtualWidth, virtWidth, DTA_VirtualHeight, virtHeight, DTA_FullscreenScale, FSMode_ScaleToFit43); y += fontheight; } } } //============================================================================= // // The main class // //============================================================================= class ImageScrollerMenu : Menu { ImageScrollerPage previous; ImageScrollerPage current; double start; int length; int dir; int index; ImageScrollerDescriptor mDesc; private void StartTransition(ImageScrollerPage to, int animtype) { if (AnimatedTransition) { start = MSTime() * (120. / 1000.); length = 30; dir = animtype; previous = current; } current = to; } virtual void Init(Menu parent, ImageScrollerDescriptor desc) { mParentMenu = parent; index = 0; mDesc = desc; AnimatedTransition = desc.mAnimatedTransition; current = mDesc.mItems[0]; previous = null; } //============================================================================= // // // //============================================================================= override bool MenuEvent(int mkey, bool fromcontroller) { if (mDesc.mItems.Size() <= 1) { if (mkey == MKEY_Enter) mkey = MKEY_Back; else if (mkey == MKEY_Right || mkey == MKEY_Left) return true; } switch (mkey) { case MKEY_Back: // Before going back the currently running transition must be terminated. previous = null; return Super.MenuEvent(mkey, fromcontroller); case MKEY_Left: if (previous == null) { if (--index < 0) index = mDesc.mItems.Size() - 1; let next = mDesc.mItems[index]; StartTransition(next, -1); MenuSound("menu/choose"); } return true; case MKEY_Right: case MKEY_Enter: if (previous == null) { int oldindex = index; if (++index >= mDesc.mItems.Size()) index = 0; let next = mDesc.mItems[index]; StartTransition(next, 1); MenuSound("menu/choose"); } return true; default: return Super.MenuEvent(mkey, fromcontroller); } } //============================================================================= // // // //============================================================================= override bool MouseEvent(int type, int x, int y) { // Todo: Implement some form of drag event to switch between pages. if (type == MOUSE_Release) { return MenuEvent(MKEY_Enter, false); } return Super.MouseEvent(type, x, y); } //============================================================================= // // // //============================================================================= private bool DrawTransition() { double now = MSTime() * (120. / 1000.); if (now < start + length) { double factor = screen.GetWidth()/2; double phase = (now - start) / length * 180. + 90.; screen.SetOffset(factor * dir * (sin(phase) - 1.), 0); previous.Drawer(false); screen.SetOffset(factor * dir * (sin(phase) + 1.), 0); current.Drawer(false); screen.SetOffset(0, 0); return true; } previous = null; return false; } //============================================================================= // // // //============================================================================= override void Drawer() { if (previous != null) { Animated = true; if (DrawTransition()) return; previous = null; } current.Drawer(false); Animated = false; } }