void OBSBasicPreview::DoSelect(const vec2 &pos)
{
OBSBasic *main = reinterpret_cast<OBSBasic*>(App()->GetMainWindow());
OBSScene scene = main->GetCurrentScene();
OBSSceneItem item = GetItemAtPos(pos, true);
obs_scene_enum_items(scene, select_one, (obs_sceneitem_t)item);
}
bool OBSBasicPreview::SelectedAtPos(const vec2 &pos)
{
OBSBasic *main = reinterpret_cast<OBSBasic*>(App()->GetMainWindow());
OBSScene scene = main->GetCurrentScene();
if (!scene)
return false;
SceneFindData data(pos, false);
obs_scene_enum_items(scene, CheckItemSelected, &data);
return !!data.item;
}
OBSSceneItem OBSBasicPreview::GetItemAtPos(const vec2 &pos, bool selectBelow)
{
OBSBasic *main = reinterpret_cast<OBSBasic*>(App()->GetMainWindow());
OBSScene scene = main->GetCurrentScene();
if (!scene)
return OBSSceneItem();
SceneFindData data(pos, selectBelow);
obs_scene_enum_items(scene, FindItemAtPos, &data);
return data.item;
}
void OBSBasicPreview::MoveItems(const vec2 &pos)
{
Qt::KeyboardModifiers modifiers = QGuiApplication::keyboardModifiers();
OBSBasic *main = reinterpret_cast<OBSBasic*>(App()->GetMainWindow());
OBSScene scene = main->GetCurrentScene();
vec2 offset, moveOffset;
vec2_sub(&offset, &pos, &startPos);
vec2_sub(&moveOffset, &offset, &lastMoveOffset);
if (!(modifiers & Qt::ControlModifier))
SnapItemMovement(moveOffset);
vec2_add(&lastMoveOffset, &lastMoveOffset, &moveOffset);
obs_scene_enum_items(scene, move_items, &moveOffset);
}
void OBSBasicPreview::SnapItemMovement(vec2 &offset)
{
OBSBasic *main = reinterpret_cast<OBSBasic*>(App()->GetMainWindow());
OBSScene scene = main->GetCurrentScene();
SelectedItemBounds data;
obs_scene_enum_items(scene, AddItemBounds, &data);
data.tl.x += offset.x;
data.tl.y += offset.y;
data.br.x += offset.x;
data.br.y += offset.y;
vec3 snapOffset = GetScreenSnapOffset(data.tl, data.br);
offset.x += snapOffset.x;
offset.y += snapOffset.y;
}
static OBSSceneItem FindASelectedItem(OBSScene scene)
{
auto func = [] (obs_scene_t *scene, obs_sceneitem_t *item, void *param)
{
OBSSceneItem &dst = *reinterpret_cast<OBSSceneItem*>(param);
if (obs_sceneitem_selected(item)) {
dst = item;
return false;
}
UNUSED_PARAMETER(scene);
return true;
};
OBSSceneItem item;
obs_scene_enum_items(scene, func, &item);
return item;
}
void OBSBasicPreview::GetStretchHandleData(const vec2 &pos)
{
OBSBasic *main = reinterpret_cast<OBSBasic*>(App()->GetMainWindow());
OBSScene scene = main->GetCurrentScene();
if (!scene)
return;
HandleFindData data(pos, main->previewScale);
obs_scene_enum_items(scene, FindHandleAtPos, &data);
stretchItem = std::move(data.item);
stretchHandle = data.handle;
if (stretchHandle != ItemHandle::None) {
matrix4 boxTransform;
vec3 itemUL;
float itemRot;
stretchItemSize = GetItemSize(stretchItem);
obs_sceneitem_get_box_transform(stretchItem, &boxTransform);
itemRot = obs_sceneitem_getrot(stretchItem);
vec3_from_vec4(&itemUL, &boxTransform.t);
/* build the item space conversion matrices */
matrix4_identity(&itemToScreen);
matrix4_rotate_aa4f(&itemToScreen, &itemToScreen,
0.0f, 0.0f, 1.0f, RAD(itemRot));
matrix4_translate3f(&itemToScreen, &itemToScreen,
itemUL.x, itemUL.y, 0.0f);
matrix4_identity(&screenToItem);
matrix4_translate3f(&screenToItem, &screenToItem,
-itemUL.x, -itemUL.y, 0.0f);
matrix4_rotate_aa4f(&screenToItem, &screenToItem,
0.0f, 0.0f, 1.0f, RAD(-itemRot));
}
}
void OBSBasicPreview::DrawSceneEditing()
{
OBSBasic *main = reinterpret_cast<OBSBasic*>(App()->GetMainWindow());
effect_t solid = obs_get_solid_effect();
technique_t tech = effect_gettechnique(solid, "Solid");
vec4 color;
vec4_set(&color, 1.0f, 0.0f, 0.0f, 1.0f);
effect_setvec4(solid, effect_getparambyname(solid, "color"), &color);
technique_begin(tech);
technique_beginpass(tech, 0);
OBSScene scene = main->GetCurrentScene();
if (scene)
obs_scene_enum_items(scene, DrawSelectedItem, this);
gs_load_vertexbuffer(nullptr);
technique_endpass(tech);
technique_end(tech);
}
