raze/wadsrc/static/zscript/ui/menu/imagescroller.zs

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2020-10-08 20:20:41 +00:00
/*
** 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<ImageScrollerPage> 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;
}
void Init(Menu parent, ImageScrollerDescriptor desc)
{
mParentMenu = parent;
index = 0;
mDesc = desc;
AnimatedTransition = desc.mAnimatedTransition;
}
//=============================================================================
//
//
//
//=============================================================================
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(0, factor * dir * (sin(phase) - 1.));
previous.Drawer(false);
screen.SetOffset(0, factor * dir * (sin(phase) + 1.));
current.Drawer(false);
screen.SetOffset(0, 0);
return true;
}
previous = null;
return false;
}
//=============================================================================
//
//
//
//=============================================================================
override void Drawer()
{
if (previous != null)
{
if (DrawTransition()) return;
previous = null;
}
current.Drawer(false);
}
}