diff options
Diffstat (limited to 'Minecraft.Client/Common/UI/UISplitScreenHelpers.h')
| -rw-r--r-- | Minecraft.Client/Common/UI/UISplitScreenHelpers.h | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/Minecraft.Client/Common/UI/UISplitScreenHelpers.h b/Minecraft.Client/Common/UI/UISplitScreenHelpers.h new file mode 100644 index 00000000..e451b3f2 --- /dev/null +++ b/Minecraft.Client/Common/UI/UISplitScreenHelpers.h @@ -0,0 +1,114 @@ +#pragma once + +// Shared split-screen UI helpers to avoid duplicating viewport math +// across HUD, Chat, Tooltips, and container menus. + +// Compute the raw viewport rectangle for a given viewport type. +inline void GetViewportRect(F32 screenW, F32 screenH, C4JRender::eViewportType viewport, + F32 &originX, F32 &originY, F32 &viewW, F32 &viewH) +{ + originX = originY = 0; + viewW = screenW; + viewH = screenH; + switch(viewport) + { + case C4JRender::VIEWPORT_TYPE_SPLIT_TOP: + viewH = screenH * 0.5f; break; + case C4JRender::VIEWPORT_TYPE_SPLIT_BOTTOM: + originY = screenH * 0.5f; viewH = screenH * 0.5f; break; + case C4JRender::VIEWPORT_TYPE_SPLIT_LEFT: + viewW = screenW * 0.5f; break; + case C4JRender::VIEWPORT_TYPE_SPLIT_RIGHT: + originX = screenW * 0.5f; viewW = screenW * 0.5f; break; + case C4JRender::VIEWPORT_TYPE_QUADRANT_TOP_LEFT: + viewW = screenW * 0.5f; viewH = screenH * 0.5f; break; + case C4JRender::VIEWPORT_TYPE_QUADRANT_TOP_RIGHT: + originX = screenW * 0.5f; viewW = screenW * 0.5f; viewH = screenH * 0.5f; break; + case C4JRender::VIEWPORT_TYPE_QUADRANT_BOTTOM_LEFT: + originY = screenH * 0.5f; viewW = screenW * 0.5f; viewH = screenH * 0.5f; break; + case C4JRender::VIEWPORT_TYPE_QUADRANT_BOTTOM_RIGHT: + originX = screenW * 0.5f; originY = screenH * 0.5f; + viewW = screenW * 0.5f; viewH = screenH * 0.5f; break; + default: break; + } +} + +// Fit a 16:9 rectangle inside the given dimensions. +inline void Fit16x9(F32 viewW, F32 viewH, S32 &fitW, S32 &fitH, S32 &offsetX, S32 &offsetY) +{ + const F32 kAspect = 16.0f / 9.0f; + if(viewW / viewH > kAspect) + { + fitH = (S32)viewH; + fitW = (S32)(viewH * kAspect); + } + else + { + fitW = (S32)viewW; + fitH = (S32)(viewW / kAspect); + } + offsetX = (S32)((viewW - fitW) * 0.5f); + offsetY = (S32)((viewH - fitH) * 0.5f); +} + +// Convenience: just fit 16:9 dimensions, ignore offsets. +inline void Fit16x9(S32 &width, S32 &height) +{ + S32 offX, offY; + Fit16x9((F32)width, (F32)height, width, height, offX, offY); +} + +// Compute the uniform scale and tileYStart for split-screen tile rendering. +// Used by HUD, Chat, and Tooltips to scale the SWF movie to cover the viewport tile. +inline void ComputeTileScale(S32 tileWidth, S32 tileHeight, S32 movieWidth, S32 movieHeight, + bool needsYTile, F32 &outScale, S32 &outTileYStart) +{ + F32 scaleW = (F32)tileWidth / (F32)movieWidth; + F32 scaleH = (F32)tileHeight / (F32)movieHeight; + F32 scale = (scaleW > scaleH) ? scaleW : scaleH; + if(scale < 1.0f) scale = 1.0f; + + outTileYStart = 0; + if(needsYTile) + { + S32 dispH = (S32)(movieHeight * scale); + outTileYStart = dispH - tileHeight; + if(outTileYStart < 0) outTileYStart = 0; + scaleH = (F32)(outTileYStart + tileHeight) / (F32)movieHeight; + scale = (scaleW > scaleH) ? scaleW : scaleH; + if(scale < 1.0f) scale = 1.0f; + } + + outScale = scale; +} + +// Compute the render offset to center split-screen SWF content in the viewport. +// Used by Chat and Tooltips (HUD uses repositionHud instead). +inline void ComputeSplitContentOffset(C4JRender::eViewportType viewport, S32 movieWidth, S32 movieHeight, + F32 scale, S32 tileWidth, S32 tileHeight, S32 tileYStart, + S32 &outXOffset, S32 &outYOffset) +{ + S32 contentCenterX, contentCenterY; + if(viewport == C4JRender::VIEWPORT_TYPE_SPLIT_LEFT || viewport == C4JRender::VIEWPORT_TYPE_SPLIT_RIGHT) + { + contentCenterX = (S32)(movieWidth * scale / 4); + contentCenterY = (S32)(movieHeight * scale / 2); + } + else if(viewport == C4JRender::VIEWPORT_TYPE_SPLIT_TOP || viewport == C4JRender::VIEWPORT_TYPE_SPLIT_BOTTOM) + { + contentCenterX = (S32)(movieWidth * scale / 2); + contentCenterY = (S32)(movieHeight * scale * 3 / 4); + } + else + { + contentCenterX = (S32)(movieWidth * scale / 4); + contentCenterY = (S32)(movieHeight * scale * 3 / 4); + } + + outXOffset = 0; + outYOffset = 0; + if(viewport == C4JRender::VIEWPORT_TYPE_SPLIT_LEFT || viewport == C4JRender::VIEWPORT_TYPE_QUADRANT_TOP_LEFT || viewport == C4JRender::VIEWPORT_TYPE_QUADRANT_BOTTOM_LEFT) + outXOffset = -(tileWidth / 2 - contentCenterX); + if(viewport == C4JRender::VIEWPORT_TYPE_SPLIT_TOP || viewport == C4JRender::VIEWPORT_TYPE_QUADRANT_TOP_LEFT || viewport == C4JRender::VIEWPORT_TYPE_QUADRANT_TOP_RIGHT) + outYOffset = -(tileHeight / 2 - (contentCenterY - tileYStart)); +} |