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https://github.com/obsproject/obs-studio.git
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452e0695f4
So, scene editing was interesting (and by interesting I mean excruciating). I almost implemented 'manipulator' visuals (ala 3dsmax for example), and used 3 modes for controlling position/rotation/size, but in a 2D editing, it felt clunky, so I defaulted back to simply click-and-drag for movement, and then took a similar though slightly different looking approach for handling scaling and reszing. I also added a number of menu item helpers related to positioning, scaling, rotating, flipping, and resetting the transform back to default. There is also a new 'transform' dialog (accessible via menu) which will allow you to manually edit every single transform variable of a scene item directly if desired. If a scene item does not have bounds active, pulling on the sides of a source will cause it to resize it via base scale rather than by the bounding box system (if the source resizes that scale will apply). If bounds are active, it will modify the bounding box only instead. How a source scales when a bounding box is active depends on the type of bounds being used. You can set it to scale to the inner bounds, the outer bounds, scale to bounds width only, scale to bounds height only, and a setting to stretch to bounds (which forces a source to always draw at the bounding box size rather than be affected by its internal size). You can also set it to be used as a 'maximum' size, so that the source doesn't necessarily get scaled unless it extends beyond the bounds. Like in OBS1, objects will snap to the edges unless the control key is pressed. However, this will now happen even if the object is rotated or oriented in any strange way. Snapping will also occur when stretching or changing the bounding box size.
85 lines
2.4 KiB
C++
85 lines
2.4 KiB
C++
#pragma once
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#include <obs.hpp>
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#include <graphics/vec2.h>
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#include <graphics/matrix4.h>
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#include "qt-display.hpp"
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#include "obs-app.hpp"
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class OBSBasic;
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class QMouseEvent;
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#define ITEM_LEFT (1<<0)
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#define ITEM_RIGHT (1<<1)
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#define ITEM_TOP (1<<2)
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#define ITEM_BOTTOM (1<<3)
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enum class ItemHandle : uint32_t {
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None = 0,
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TopLeft = ITEM_TOP | ITEM_LEFT,
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TopCenter = ITEM_TOP,
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TopRight = ITEM_TOP | ITEM_RIGHT,
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CenterLeft = ITEM_LEFT,
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CenterRight = ITEM_RIGHT,
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BottomLeft = ITEM_BOTTOM | ITEM_LEFT,
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BottomCenter = ITEM_BOTTOM,
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BottomRight = ITEM_BOTTOM | ITEM_RIGHT
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};
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class OBSBasicPreview : public OBSQTDisplay {
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Q_OBJECT
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private:
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OBSSceneItem stretchItem;
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ItemHandle stretchHandle = ItemHandle::None;
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vec2 stretchItemSize;
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matrix4 screenToItem;
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matrix4 itemToScreen;
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vec2 startPos;
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vec2 lastMoveOffset;
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bool mouseDown = false;
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bool mouseMoved = false;
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bool mouseOverItems = false;
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static vec2 GetMouseEventPos(QMouseEvent *event);
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static bool DrawSelectedItem(obs_scene_t scene, obs_sceneitem_t item,
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void *param);
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static OBSSceneItem GetItemAtPos(const vec2 &pos, bool selectBelow);
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static bool SelectedAtPos(const vec2 &pos);
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static void DoSelect(const vec2 &pos);
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static void DoCtrlSelect(const vec2 &pos);
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static vec3 GetScreenSnapOffset(const vec3 &tl, const vec3 &br);
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void GetStretchHandleData(const vec2 &pos);
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void SnapStretchingToScreen(vec3 &tl, vec3 &br);
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void ClampAspect(vec3 &tl, vec3 &br, vec2 &size, const vec2 &baseSize);
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vec3 CalculateStretchPos(const vec3 &tl, const vec3 &br);
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void StretchItem(const vec2 &pos);
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static void SnapItemMovement(vec2 &offset);
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void MoveItems(const vec2 &pos);
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void ProcessClick(const vec2 &pos);
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public:
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OBSBasicPreview(QWidget *parent, Qt::WindowFlags flags = 0);
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virtual void mousePressEvent(QMouseEvent *event) override;
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virtual void mouseReleaseEvent(QMouseEvent *event) override;
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virtual void mouseMoveEvent(QMouseEvent *event) override;
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void DrawSceneEditing();
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/* use libobs allocator for alignment because the matrices itemToScreen
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* and screenToItem may contain SSE data, which will cause SSE
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* instructions to crash if the data is not aligned to at least a 16
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* byte boundry. */
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static inline void* operator new(size_t size) {return bmalloc(size);}
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static inline void operator delete(void* ptr) {bfree(ptr);}
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};
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