mirror of
https://github.com/ZDoom/gzdoom.git
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faead1c733
This issue was previously fixed in0c2ed71cdd, but that change added a bug that would trigger an infinite loop on scrolling in a list without any selectable items. Then4fdbe81a13restored the old behavior, reintroducing the issue. This new fix does handle lists without any selectable items correctly.
372 lines
9.7 KiB
Text
372 lines
9.7 KiB
Text
/*
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** listmenu.zs
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** The main menu class
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**
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**---------------------------------------------------------------------------
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** Copyright 2010-2020 Christoph Oelckers
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** All rights reserved.
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions
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** are met:
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**
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** 1. Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** 2. Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in the
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** documentation and/or other materials provided with the distribution.
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** 3. The name of the author may not be used to endorse or promote products
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** derived from this software without specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**---------------------------------------------------------------------------
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**
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*/
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class ListMenuDescriptor : MenuDescriptor native
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{
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enum EScale
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{
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CleanScale = -1,
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OptCleanScale = -2
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};
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native Array<ListMenuItem> mItems;
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native int mSelectedItem;
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native double mSelectOfsX;
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native double mSelectOfsY;
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native TextureID mSelector;
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native int mDisplayTop;
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native double mXpos, mYpos;
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native int mWLeft, mWRight;
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native int mLinespacing; // needs to be stored for dynamically created menus
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native int mAutoselect; // this can only be set by internal menu creation functions
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native Font mFont;
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native int mFontColor;
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native int mFontColor2;
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native bool mCenter;
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native bool mCenterText;
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native bool mAnimatedTransition;
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native bool mAnimated;
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native bool mDontBlur;
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native bool mDontDim;
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native int mVirtWidth, mVirtHeight;
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native void Reset();
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int DisplayWidth()
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{
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if (mVirtWidth == OptCleanScale) return m_cleanscale ? CleanScale : 320;
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return mVirtWidth;
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}
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int DisplayHeight()
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{
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if (mVirtWidth == OptCleanScale) return m_cleanscale ? CleanScale : 200;
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return mVirtHeight;
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}
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}
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//=============================================================================
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//
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// list menu class runs a menu described by a DListMenuDescriptor
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//
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//=============================================================================
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class ListMenu : Menu
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{
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ListMenuDescriptor mDesc;
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MenuItemBase mFocusControl;
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virtual void Init(Menu parent = NULL, ListMenuDescriptor desc = NULL)
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{
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Super.Init(parent);
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mDesc = desc;
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AnimatedTransition = mDesc.mAnimatedTransition;
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Animated = mDesc.mAnimated;
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DontBlur = mDesc.mDontBlur;
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DontDim = mDesc.mDontDim;
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if (desc.mCenter)
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{
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double center = 160;
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for(int i=0; i < mDesc.mItems.Size(); i++)
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{
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double xpos = mDesc.mItems[i].GetX();
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int width = mDesc.mItems[i].GetWidth();
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double curx = mDesc.mSelectOfsX;
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if (width > 0 && mDesc.mItems[i].Selectable())
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{
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double left = 160 - (width - curx) / 2 - curx;
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if (left < center) center = left;
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}
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}
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for(int i=0;i<mDesc.mItems.Size(); i++)
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{
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int width = mDesc.mItems[i].GetWidth();
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if (width > 0)
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{
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mDesc.mItems[i].SetX(center);
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}
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}
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}
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// notify all items that the menu was just created.
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for(int i=0;i<mDesc.mItems.Size(); i++)
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{
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mDesc.mItems[i].OnMenuCreated();
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}
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}
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//=============================================================================
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//
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//
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//
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//=============================================================================
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ListMenuItem GetItem(Name name)
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{
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for(int i = 0; i < mDesc.mItems.Size(); i++)
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{
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Name nm = mDesc.mItems[i].GetAction();
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if (nm == name) return mDesc.mItems[i];
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}
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return NULL;
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}
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//=============================================================================
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//
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//
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//
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//=============================================================================
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override bool OnUIEvent(UIEvent ev)
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{
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if (ev.Type == UIEvent.Type_KeyDown && ev.KeyChar > 0)
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{
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// tolower
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int ch = ev.KeyChar;
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ch = ch >= 65 && ch < 91 ? ch + 32 : ch;
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for(int i = mDesc.mSelectedItem + 1; i < mDesc.mItems.Size(); i++)
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{
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if (mDesc.mitems[i].Selectable() && mDesc.mItems[i].CheckHotkey(ch))
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{
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mDesc.mSelectedItem = i;
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MenuSound("menu/cursor");
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return true;
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}
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}
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for(int i = 0; i < mDesc.mSelectedItem; i++)
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{
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if (mDesc.mitems[i].Selectable() && mDesc.mItems[i].CheckHotkey(ch))
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{
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mDesc.mSelectedItem = i;
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MenuSound("menu/cursor");
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return true;
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}
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}
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}
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return Super.OnUIEvent(ev);
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}
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//=============================================================================
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//
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//
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//
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//=============================================================================
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override bool MenuEvent (int mkey, bool fromcontroller)
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{
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int oldSelect = mDesc.mSelectedItem;
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int startedAt;
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switch (mkey)
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{
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case MKEY_Up:
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startedAt = mDesc.mSelectedItem < 0 ? 0 : mDesc.mSelectedItem;
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do
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{
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if (--mDesc.mSelectedItem < 0) mDesc.mSelectedItem = mDesc.mItems.Size()-1;
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}
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while (!mDesc.mItems[mDesc.mSelectedItem].Selectable() && mDesc.mSelectedItem != startedAt);
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if (mDesc.mSelectedItem == startedAt) mDesc.mSelectedItem = oldSelect;
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MenuSound("menu/cursor");
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return true;
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case MKEY_Down:
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startedAt = mDesc.mSelectedItem < 0 ? mDesc.mItems.Size()-1 : mDesc.mSelectedItem;
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do
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{
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if (++mDesc.mSelectedItem >= mDesc.mItems.Size()) mDesc.mSelectedItem = 0;
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}
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while (!mDesc.mItems[mDesc.mSelectedItem].Selectable() && mDesc.mSelectedItem != startedAt);
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if (mDesc.mSelectedItem == startedAt) mDesc.mSelectedItem = oldSelect;
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MenuSound("menu/cursor");
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return true;
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case MKEY_Enter:
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if (mDesc.mSelectedItem >= 0 && mDesc.mItems[mDesc.mSelectedItem].Activate())
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{
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MenuSound("menu/advance");
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}
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return true;
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default:
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return Super.MenuEvent(mkey, fromcontroller);
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}
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}
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//=============================================================================
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//
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//
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//
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//=============================================================================
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override bool MouseEvent(int type, int x, int y)
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{
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int sel = -1;
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int w = mDesc.DisplayWidth();
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double sx, sy;
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if (w == ListMenuDescriptor.CleanScale)
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{
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// convert x/y from screen to virtual coordinates, according to CleanX/Yfac use in DrawTexture
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x = ((x - (screen.GetWidth() / 2)) / CleanXfac) + 160;
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y = ((y - (screen.GetHeight() / 2)) / CleanYfac) + 100;
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}
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else
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{
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// for fullscreen scale, transform coordinates so that for the given rect the coordinates are within (0, 0, w, h)
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int h = mDesc.DisplayHeight();
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double fx, fy, fw, fh;
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[fx, fy, fw, fh] = Screen.GetFullscreenRect(w, h, FSMode_ScaleToFit43);
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x = int((x - fx) * w / fw);
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y = int((y - fy) * h / fh);
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}
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if (mFocusControl != NULL)
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{
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mFocusControl.MouseEvent(type, x, y);
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return true;
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}
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else
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{
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if ((mDesc.mWLeft <= 0 || x > mDesc.mWLeft) &&
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(mDesc.mWRight <= 0 || x < mDesc.mWRight))
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{
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for(int i=0;i<mDesc.mItems.Size(); i++)
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{
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if (mDesc.mItems[i].Selectable() && mDesc.mItems[i].CheckCoordinate(x, y))
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{
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if (i != mDesc.mSelectedItem)
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{
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//MenuSound("menu/cursor");
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}
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mDesc.mSelectedItem = i;
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mDesc.mItems[i].MouseEvent(type, x, y);
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return true;
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}
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}
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}
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}
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mDesc.mSelectedItem = -1;
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return Super.MouseEvent(type, x, y);
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}
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//=============================================================================
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//
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//
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//
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//=============================================================================
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override void Ticker ()
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{
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Super.Ticker();
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for(int i=0;i<mDesc.mItems.Size(); i++)
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{
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mDesc.mItems[i].Ticker();
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}
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}
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//=============================================================================
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//
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//
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//
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//=============================================================================
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override void Drawer ()
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{
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for(int i=0;i<mDesc.mItems.Size(); i++)
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{
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if (mDesc.mItems[i].mEnabled) mDesc.mItems[i].Draw(mDesc.mSelectedItem == i, mDesc);
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}
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if (mDesc.mSelectedItem >= 0 && mDesc.mSelectedItem < mDesc.mItems.Size())
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{
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if (!menuDelegate.DrawSelector(mDesc))
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mDesc.mItems[mDesc.mSelectedItem].DrawSelector(mDesc.mSelectOfsX, mDesc.mSelectOfsY, mDesc.mSelector, mDesc);
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}
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Super.Drawer();
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}
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//=============================================================================
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//
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//
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//
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//=============================================================================
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override void SetFocus(MenuItemBase fc)
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{
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mFocusControl = fc;
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}
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override bool CheckFocus(MenuItemBase fc)
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{
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return mFocusControl == fc;
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}
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override void ReleaseFocus()
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{
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mFocusControl = NULL;
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}
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//=============================================================================
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//
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//
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//
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//=============================================================================
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void ChangeLineSpacing(int newspace)
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{
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double top = -32767;
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for (int i = 0; i < mDesc.mItems.Size(); i++)
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{
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let selitem = ListMenuItemSelectable(mDesc.mItems[i]);
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if (selitem)
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{
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let y = mDesc.mItems[i].GetY();
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if (top == -32767)
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{
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top = y;
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}
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else
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{
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let newy = top + (y - top) / mDesc.mLineSpacing * newspace;
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mDesc.mItems[i].SetY(newy);
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}
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}
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}
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mDesc.mLineSpacing = newspace;
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}
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}
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