mkxp/src/window.cpp

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2013-09-01 14:27:21 +00:00
/*
** window.cpp
**
** This file is part of mkxp.
**
** Copyright (C) 2013 Jonas Kulla <Nyocurio@gmail.com>
**
** mkxp 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 2 of the License, or
** (at your option) any later version.
**
** mkxp 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 mkxp. If not, see <http://www.gnu.org/licenses/>.
*/
#include "window.h"
#include "viewport.h"
#include "globalstate.h"
#include "bitmap.h"
#include "etc.h"
#include "etc-internal.h"
#include "tilequad.h"
#include "gl-util.h"
#include "quad.h"
#include "quadarray.h"
#include "texpool.h"
#include "glstate.h"
#include "sigc++/connection.h"
#include <QDebug>
template<typename T>
struct Sides
{
T l, r, t, b;
};
template<typename T>
struct Corners
{
T tl, tr, bl, br;
};
static IntRect backgroundSrc(0, 0, 128, 128);
static IntRect cursorSrc(128, 64, 32, 32);
static IntRect pauseAniSrc[] =
{
IntRect(160, 64, 16, 16),
IntRect(176, 64, 16, 16),
IntRect(160, 80, 16, 16),
IntRect(176, 80, 16, 16)
};
static Sides<IntRect> bordersSrc =
{
IntRect(128, 16, 16, 32),
IntRect(176, 16, 16, 32),
IntRect(144, 0, 32, 16),
IntRect(144, 48, 32, 16)
};
static Corners<IntRect> cornersSrc =
{
IntRect(128, 0, 16, 16),
IntRect(176, 0, 16, 16),
IntRect(128, 48, 16, 16),
IntRect(176, 48, 16, 16)
};
static Sides<IntRect> scrollArrowSrc =
{
IntRect(144, 24, 8, 16),
IntRect(168, 24, 8, 16),
IntRect(152, 16, 16, 8),
IntRect(152, 40, 16, 8)
};
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/* Cycling */
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static unsigned char cursorAniAlpha[] =
{
/* Fade out */
0xFF, 0xF7, 0xEF, 0xE7, 0xDF, 0xD7, 0xCF, 0xC7,
0xBF, 0xB7, 0xAF, 0xA7, 0x9F, 0x97, 0x8F, 0x87,
/* Fade in */
0x7F, 0x87, 0x8F, 0x97, 0x9F, 0xA7, 0xAF, 0xB7,
0xBF, 0xC7, 0xCF, 0xD7, 0xDF, 0xE7, 0xEF, 0xF7
};
static elementsN(cursorAniAlpha);
/* Cycling */
static unsigned char pauseAniQuad[] =
{
0, 0, 0, 0, 0, 0, 0, 0,
1, 1, 1, 1, 1, 1, 1, 1,
2, 2, 2, 2, 2, 2, 2, 2,
3, 3, 3, 3, 3, 3, 3, 3
};
static elementsN(pauseAniQuad);
/* No cycle */
static unsigned char pauseAniAlpha[] =
{
0x00, 0x20, 0x40, 0x60,
0x80, 0xA0, 0xC0, 0xE0,
0xFF
};
static elementsN(pauseAniAlpha);
/* Points to an array of quads which it doesn't own.
* Useful for setting alpha of quads stored inside
* bigger arrays */
struct QuadChunk
{
Vertex *vert;
int count; /* In quads */
QuadChunk()
: vert(0), count(0)
{}
void setAlpha(float value)
{
for (int i = 0; i < count*4; ++i)
vert[i].color.w = value;
}
};
/* Vocabulary:
*
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* Base: 'Base' layer of window; includes background and borders.
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* Drawn at z+0.
*
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* Controls: 'Controls' layer of window; includes scroll arrows,
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* pause animation, cursor rectangle and contents bitmap.
* Drawn at z+2.
*
* Scroll arrows: Arrows that appear automatically when a part of
* the contents bitmap is not visible in either upper, lower, left
* or right direction.
*
* Pause: Animation that displays an animating icon in the bottom
* center of the window, usually indicating user input is awaited,
* such as when text is displayed.
*
* Cursor: Blinking rectangle that usually displays a selection to
* the user.
*
* Contents: User settable bitmap that is drawn inside the window,
* clipped to a 16 pixel smaller rectangle. Position is adjusted
* with OX/OY.
*
* BaseTex: If the window has an opacity <255, we have to prerender
* the base to a texture and draw that. Otherwise, we can draw the
* quad array directly to the screen.
*/
struct WindowPrivate
{
Bitmap *windowskin;
Bitmap *contents;
bool bgStretch;
Rect *cursorRect;
bool active;
bool pause;
sigc::connection cursorRectCon;
Vec2i sceneOffset;
Vec2i position;
Vec2i size;
Vec2i contentsOffset;
NormValue opacity;
NormValue backOpacity;
NormValue contentsOpacity;
bool baseVertDirty;
bool opacityDirty;
bool baseTexDirty;
ColorQuadArray baseQuadArray;
/* Used when opacity < 255 */
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TEXFBO baseTex;
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bool useBaseTex;
QuadChunk backgroundVert;
Quad baseTexQuad;
struct WindowControls : public ViewportElement
{
WindowPrivate *p;
WindowControls(WindowPrivate *p,
Viewport *viewport = 0)
: ViewportElement(viewport),
p(p)
{
setZ(2);
}
void draw()
{
p->drawControls();
}
void release()
{
unlink();
}
};
WindowControls controlsElement;
ColorQuadArray controlsQuadArray;
int controlsQuadCount;
Quad contentsQuad;
QuadChunk pauseAniVert;
QuadChunk cursorVert;
unsigned char cursorAniAlphaIdx;
unsigned char pauseAniAlphaIdx;
unsigned char pauseAniQuadIdx;
bool controlsVertDirty;
EtcTemps tmp;
sigc::connection prepareCon;
WindowPrivate(Viewport *viewport = 0)
: windowskin(0),
contents(0),
bgStretch(true),
cursorRect(&tmp.rect),
active(true),
pause(false),
opacity(255),
backOpacity(255),
contentsOpacity(255),
baseVertDirty(true),
opacityDirty(true),
baseTexDirty(true),
controlsElement(this, viewport),
cursorAniAlphaIdx(0),
pauseAniAlphaIdx(0),
pauseAniQuadIdx(0),
controlsVertDirty(true)
{
refreshCursorRectCon();
controlsQuadArray.resize(14);
TileQuads::buildFrameSource(cursorSrc, controlsQuadArray.vertices.data());
cursorVert.count = 9;
pauseAniVert.count = 1;
prepareCon = gState->prepareDraw.connect
(sigc::mem_fun(this, &WindowPrivate::prepare));
}
~WindowPrivate()
{
gState->texPool().release(baseTex);
cursorRectCon.disconnect();
prepareCon.disconnect();
}
void onCursorRectChange()
{
controlsVertDirty = true;
}
void refreshCursorRectCon()
{
cursorRectCon.disconnect();
cursorRectCon = cursorRect->valueChanged.connect
(sigc::mem_fun(this, &WindowPrivate::onCursorRectChange));
}
void buildBaseVert()
{
int w = size.x;
int h = size.y;
IntRect bgRect(2, 2, w - 4, h - 4);
Sides<IntRect> borderRects;
borderRects.l = IntRect(0, 8, 16, h-16);
borderRects.r = IntRect(w-16, 8, 16, h-16);
borderRects.t = IntRect(8, 0, w-16, 16 );
borderRects.b = IntRect(8, h-16, w-16, 16 );
Corners<IntRect> cornerRects;
cornerRects.tl = IntRect(0, 0, 16, 16);
cornerRects.tr = IntRect(w-16, 0, 16, 16);
cornerRects.bl = IntRect(0, h-16, 16, 16);
cornerRects.br = IntRect(w-16, h-16, 16, 16);
/* Required quad count */
int count = 0;
/* Background */
if (bgStretch)
backgroundVert.count = 1;
else
backgroundVert.count =
TileQuads::twoDimCount(128, 128, bgRect.w, bgRect.h);
count += backgroundVert.count;
/* Borders (sides) */
count += TileQuads::oneDimCount(32, w-16) * 2;
count += TileQuads::oneDimCount(32, h-16) * 2;
/* Corners */
count += 4;
/* Our vertex array */
baseQuadArray.resize(count);
Vertex *vert = baseQuadArray.vertices.data();
int i = 0;
backgroundVert.vert = &vert[i];
/* Background */
if (bgStretch)
{
Quad::setTexRect(&vert[i*4], backgroundSrc);
Quad::setPosRect(&vert[i*4], bgRect);
i += 1;
}
else
{
i += TileQuads::build(backgroundSrc, bgRect, &vert[i*4]);
}
/* Borders */
i += TileQuads::buildH(bordersSrc.t, w-16, 8, 0, &vert[i*4]);
i += TileQuads::buildH(bordersSrc.b, w-16, 8, h-16, &vert[i*4]);
i += TileQuads::buildV(bordersSrc.l, h-16, 0, 8, &vert[i*4]);
i += TileQuads::buildV(bordersSrc.r, h-16, w-16, 8, &vert[i*4]);
/* Corners */
i += Quad::setTexPosRect(&vert[i*4], cornersSrc.tl, cornerRects.tl);
i += Quad::setTexPosRect(&vert[i*4], cornersSrc.tr, cornerRects.tr);
i += Quad::setTexPosRect(&vert[i*4], cornersSrc.bl, cornerRects.bl);
i += Quad::setTexPosRect(&vert[i*4], cornersSrc.br, cornerRects.br);
for (int j = 0; j < count*4; ++j)
vert[j].color = Vec4(1, 1, 1, 1);
FloatRect texRect = FloatRect(0, 0, size.x, size.y);
baseTexQuad.setTexPosRect(texRect, texRect);
baseTexDirty = true;
}
void updateBaseAlpha()
{
/* This is always applied unconditionally */
backgroundVert.setAlpha(backOpacity.norm);
baseTexQuad.setColor(Vec4(1, 1, 1, opacity.norm));
baseTexDirty = true;
}
void ensureBaseTexReady()
{
/* Make sure texture is big enough */
int newW = baseTex.width;
int newH = baseTex.height;
bool resizeNeeded = false;
if (size.x > baseTex.width)
{
newW = findNextPow2(size.x);
resizeNeeded = true;
}
if (size.y > baseTex.height)
{
newH = findNextPow2(size.y);
resizeNeeded = true;
}
if (!resizeNeeded)
return;
gState->texPool().release(baseTex);
baseTex = gState->texPool().request(newW, newH);
baseTexDirty = true;
}
void redrawBaseTex()
{
/* Discard old buffer */
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TEX::bind(baseTex.tex);
TEX::allocEmpty(baseTex.width, baseTex.height);
TEX::unbind();
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FBO::bind(baseTex.fbo, FBO::Draw);
glState.viewport.pushSet(IntRect(0, 0, baseTex.width, baseTex.height));
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glState.clearColor.pushSet(Vec4());
SimpleAlphaShader &shader = gState->simpleAlphaShader();
shader.bind();
shader.applyViewportProj();
shader.setTranslation(Vec2i());
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/* Clear texture */
glClear(GL_COLOR_BUFFER_BIT);
/* Repaint base */
windowskin->bindTex(shader);
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TEX::setSmooth(true);
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/* We need to blit the background without blending,
* because we want to retain its correct alpha value.
* Otherwise it would be mutliplied by the backgrounds 0 alpha */
glState.blendMode.pushSet(BlendNone);
baseQuadArray.draw(0, backgroundVert.count);
/* Now draw the rest (ie. the frame) with blending */
glState.blendMode.set(BlendNormal);
baseQuadArray.draw(backgroundVert.count, baseQuadArray.count()-backgroundVert.count);
glState.clearColor.pop();
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glState.blendMode.pop();
glState.viewport.pop();
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TEX::setSmooth(false);
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}
void buildControlsVert()
{
int i = 0;
Vertex *vert = controlsQuadArray.vertices.data();
/* Cursor */
if (!cursorRect->isEmpty())
{
/* Effective cursor rect has 16 xy offset to window */
IntRect effectRect(cursorRect->x+16, cursorRect->y+16,
cursorRect->width, cursorRect->height);
cursorVert.vert = &vert[i*4];
i += TileQuads::buildFrame(effectRect, &vert[i*4]);
}
/* Scroll arrows */
int scrollLRY = (size.y - 16) / 2;
int scrollTBX = (size.x - 16) / 2;
Sides<IntRect> scrollArrows;
scrollArrows.l = IntRect(4, scrollLRY, 8, 16);
scrollArrows.r = IntRect(size.x - 12, scrollLRY, 8, 16);
scrollArrows.t = IntRect(scrollTBX, 4, 16, 8);
scrollArrows.b = IntRect(scrollTBX, size.y - 12, 16, 8);
if (contents)
{
if (contentsOffset.x > 0)
i += Quad::setTexPosRect(&vert[i*4], scrollArrowSrc.l, scrollArrows.l);
if (contentsOffset.y > 0)
i += Quad::setTexPosRect(&vert[i*4], scrollArrowSrc.t, scrollArrows.t);
if ((size.x - 32) < (contents->width() - contentsOffset.x))
i += Quad::setTexPosRect(&vert[i*4], scrollArrowSrc.r, scrollArrows.r);
if ((size.y - 32) < (contents->height() - contentsOffset.y))
i += Quad::setTexPosRect(&vert[i*4], scrollArrowSrc.b, scrollArrows.b);
}
/* Pause animation */
if (pause)
{
pauseAniVert.vert = &vert[i*4];
i += Quad::setTexPosRect(&vert[i*4], pauseAniSrc[pauseAniQuad[pauseAniQuadIdx]],
FloatRect((size.x - 16) / 2, size.y - 16, 16, 16));
}
controlsQuadArray.commit();
controlsQuadCount = i;
}
void prepare()
{
bool updateBaseQuadArray = false;
if (windowskin)
windowskin->flush();
if (contents)
contents->flush();
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if (baseVertDirty)
{
buildBaseVert();
baseVertDirty = false;
updateBaseQuadArray = true;
}
if (opacityDirty)
{
updateBaseAlpha();
opacityDirty = false;
updateBaseQuadArray = true;
}
if (updateBaseQuadArray)
baseQuadArray.commit();
/* If opacity has effect, we must prerender to a texture
* and then draw this texture instead of the quad array */
useBaseTex = opacity < 255;
if (useBaseTex)
{
ensureBaseTexReady();
if (baseTexDirty)
{
redrawBaseTex();
baseTexDirty = false;
}
}
}
void drawBase()
{
if (!windowskin)
return;
if (size == Vec2i(0, 0))
return;
Vec2i trans(position.x + sceneOffset.x,
position.y + sceneOffset.y);
SimpleAlphaShader &shader = gState->simpleAlphaShader();
shader.bind();
shader.applyViewportProj();
shader.setTranslation(trans);
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if (useBaseTex)
{
shader.setTexSize(Vec2i(baseTex.width, baseTex.height));
TEX::bind(baseTex.tex);
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baseTexQuad.draw();
}
else
{
windowskin->bindTex(shader);
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TEX::setSmooth(true);
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baseQuadArray.draw();
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TEX::setSmooth(false);
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}
}
void drawControls()
{
if (!windowskin)
return;
if (size == Vec2i(0, 0))
return;
if (controlsVertDirty)
{
buildControlsVert();
updateControls();
controlsVertDirty = false;
}
/* Actual on screen coordinates */
int effectX = position.x + sceneOffset.x;
int effectY = position.y + sceneOffset.y;
IntRect windowRect(effectX, effectY, size.x, size.y);
IntRect contentsRect(effectX+16, effectY+16, size.x-32, size.y-32);
glState.scissorTest.pushSet(true);
glState.scissorBox.push();
glState.scissorBox.setIntersect(windowRect);
SimpleAlphaShader &shader = gState->simpleAlphaShader();
shader.bind();
shader.applyViewportProj();
shader.setTranslation(Vec2i(effectX, effectY));
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/* Draw arrows / cursors */
windowskin->bindTex(shader);
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controlsQuadArray.draw(0, controlsQuadCount);
if (contents)
{
/* Draw contents bitmap */
glState.scissorBox.setIntersect(contentsRect);
effectX += 16-contentsOffset.x;
effectY += 16-contentsOffset.y;
shader.setTranslation(Vec2i(effectX, effectY));
contents->bindTex(shader);
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contentsQuad.draw();
}
glState.scissorBox.pop();
glState.scissorTest.pop();
}
void updateControls()
{
bool updateArray = false;
if (active && cursorVert.vert)
{
float alpha = cursorAniAlpha[cursorAniAlphaIdx] / 255.0;
cursorVert.setAlpha(alpha);
updateArray = true;
}
if (pause && pauseAniVert.vert)
{
float alpha = pauseAniAlpha[pauseAniAlphaIdx] / 255.0;
FloatRect frameRect = pauseAniSrc[pauseAniQuad[pauseAniQuadIdx]];
pauseAniVert.setAlpha(alpha);
Quad::setTexRect(pauseAniVert.vert, frameRect);
updateArray = true;
}
if (updateArray)
controlsQuadArray.commit();
}
void stepAnimations()
{
if (++cursorAniAlphaIdx == cursorAniAlphaN)
cursorAniAlphaIdx = 0;
if (pauseAniAlphaIdx < pauseAniAlphaN-1)
++pauseAniAlphaIdx;
if (++pauseAniQuadIdx == pauseAniQuadN)
pauseAniQuadIdx = 0;
}
};
Window::Window(Viewport *viewport)
: ViewportElement(viewport)
{
p = new WindowPrivate(viewport);
onGeometryChange(scene->getGeometry());
}
Window::~Window()
{
dispose();
}
void Window::update()
{
p->updateControls();
p->stepAnimations();
}
#define DISP_CLASS_NAME "window"
DEF_ATTR_SIMPLE(Window, X, int, p->position.x)
DEF_ATTR_SIMPLE(Window, Y, int, p->position.y)
DEF_ATTR_RD_SIMPLE(Window, Windowskin, Bitmap*, p->windowskin)
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DEF_ATTR_RD_SIMPLE(Window, Contents, Bitmap*, p->contents)
DEF_ATTR_RD_SIMPLE(Window, Stretch, bool, p->bgStretch)
DEF_ATTR_RD_SIMPLE(Window, CursorRect, Rect*, p->cursorRect)
DEF_ATTR_RD_SIMPLE(Window, Active, bool, p->active)
DEF_ATTR_RD_SIMPLE(Window, Pause, bool, p->pause)
DEF_ATTR_RD_SIMPLE(Window, Width, int, p->size.x)
DEF_ATTR_RD_SIMPLE(Window, Height, int, p->size.y)
DEF_ATTR_RD_SIMPLE(Window, OX, int, p->contentsOffset.x)
DEF_ATTR_RD_SIMPLE(Window, OY, int, p->contentsOffset.y)
DEF_ATTR_RD_SIMPLE(Window, Opacity, int, p->opacity)
DEF_ATTR_RD_SIMPLE(Window, BackOpacity, int, p->backOpacity)
DEF_ATTR_RD_SIMPLE(Window, ContentsOpacity, int, p->contentsOpacity)
void Window::setWindowskin(Bitmap *value)
{
GUARD_DISPOSED;
value->ensureNonMega();
p->windowskin = value;
}
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void Window::setContents(Bitmap *value)
{
GUARD_DISPOSED;
value->ensureNonMega();
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p->contents = value;
p->controlsVertDirty = true;
if (value)
p->contentsQuad.setTexPosRect(value->rect(), value->rect());
}
void Window::setStretch(bool value)
{
GUARD_DISPOSED
if (value == p->bgStretch)
return;
p->bgStretch = value;
p->baseVertDirty = true;
}
void Window::setCursorRect(Rect *value)
{
GUARD_DISPOSED
if (p->cursorRect == value)
return;
p->cursorRect = value;
p->refreshCursorRectCon();
p->onCursorRectChange();
}
void Window::setActive(bool value)
{
GUARD_DISPOSED
if (p->active == value)
return;
p->active = value;
p->cursorAniAlphaIdx = 0;
}
void Window::setPause(bool value)
{
GUARD_DISPOSED
if (p->pause == value)
return;
p->pause = value;
p->pauseAniAlphaIdx = 0;
p->pauseAniQuadIdx = 0;
p->controlsVertDirty = true;
}
void Window::setWidth(int value)
{
GUARD_DISPOSED
if (p->size.x == value)
return;
p->size.x = value;
p->baseVertDirty = true;
}
void Window::setHeight(int value)
{
GUARD_DISPOSED
if (p->size.y == value)
return;
p->size.y = value;
p->baseVertDirty = true;
}
void Window::setOX(int value)
{
GUARD_DISPOSED
if (p->contentsOffset.x == value)
return;
p->contentsOffset.x = value;
p->controlsVertDirty = true;
}
void Window::setOY(int value)
{
GUARD_DISPOSED
if (p->contentsOffset.y == value)
return;
p->contentsOffset.y = value;
p->controlsVertDirty = true;
}
void Window::setOpacity(int value)
{
GUARD_DISPOSED
if (p->opacity == value)
return;
p->opacity = value;
p->opacityDirty = true;
}
void Window::setBackOpacity(int value)
{
GUARD_DISPOSED
if (p->backOpacity == value)
return;
p->backOpacity = value;
p->opacityDirty = true;
}
void Window::setContentsOpacity(int value)
{
GUARD_DISPOSED
if (p->contentsOpacity == value)
return;
p->contentsOpacity = value;
p->contentsQuad.setColor(Vec4(1, 1, 1, p->contentsOpacity.norm));
}
void Window::draw()
{
p->drawBase();
}
void Window::onGeometryChange(const Scene::Geometry &geo)
{
p->sceneOffset.x = geo.rect.x - geo.xOrigin;
p->sceneOffset.y = geo.rect.y - geo.yOrigin;
}
void Window::setZ(int value)
{
ViewportElement::setZ(value);
p->controlsElement.setZ(value + 2);
}
void Window::setVisible(bool value)
{
ViewportElement::setVisible(value);
p->controlsElement.setVisible(value);
}
void Window::onViewportChange()
{
p->controlsElement.setScene(*this->scene);
}
void Window::releaseResources()
{
p->controlsElement.release();
unlink();
delete p;
}