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Display preview of source centered in fixed-size preview area.

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brunoherbelin
2021-01-30 23:23:30 +01:00
parent e26052013c
commit ac15bbc840
1 changed files with 17 additions and 13 deletions
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30
ImGuiVisitor.cpp
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@@ -393,18 +393,22 @@ void ImGuiVisitor::visit (Source& s)
// preview
float preview_width = ImGui::GetContentRegionAvail().x IMGUI_RIGHT_ALIGN;
float width = preview_width;
float height = s.frame()->projectionArea().y * width / ( s.frame()->projectionArea().x * s.frame()->aspectRatio());
if (height > 230) {
height = 230;
width = height * s.frame()->aspectRatio() * ( s.frame()->projectionArea().x / s.frame()->projectionArea().y);
}
ImGui::Image((void*)(uintptr_t) s.frame()->texture(), ImVec2(width, height));
float preview_height = 4.5f * ImGui::GetFrameHeightWithSpacing();
ImVec2 pos = ImGui::GetCursorPos(); // remember where we were...
float space = ImGui::GetStyle().ItemSpacing.y;
float width = preview_width;
float height = s.frame()->projectionArea().y * width / ( s.frame()->projectionArea().x * s.frame()->aspectRatio());
if (height > preview_height - space) {
height = preview_height - space;
width = height * s.frame()->aspectRatio() * ( s.frame()->projectionArea().x / s.frame()->projectionArea().y);
}
// centered image
ImGui::SetCursorPos( ImVec2(pos.x + 0.5f * (preview_width-width), pos.y + 0.5f * (preview_height-height-space)) );
ImGui::Image((void*)(uintptr_t) s.frame()->texture(), ImVec2(width, height));
// inform on visibility status
ImGui::SetCursorPos( ImVec2(preview_width + 20, pos.y -height ) );
ImGui::SetCursorPos( ImVec2(preview_width + 20, pos.y ) );
if (s.active()) {
if (s.blendingShader()->color.a > 0.f)
ImGuiToolkit::HelpMarker("Visible", ICON_FA_EYE);
@@ -415,7 +419,7 @@ void ImGuiVisitor::visit (Source& s)
ImGuiToolkit::HelpMarker("Inactive", ICON_FA_SNOWFLAKE);
// Inform on workspace
ImGui::SetCursorPos( ImVec2(preview_width + 20, pos.y -height + ImGui::GetFrameHeight()) );
ImGui::SetCursorPos( ImVec2(preview_width + 20, pos.y + ImGui::GetFrameHeightWithSpacing()) );
if (s.workspace() == Source::BACKGROUND)
ImGuiToolkit::HelpIcon("Background",10, 16);
else if (s.workspace() == Source::FOREGROUND)
@@ -424,7 +428,7 @@ void ImGuiVisitor::visit (Source& s)
ImGuiToolkit::HelpIcon("Stage",11, 16);
// locking
ImGui::SetCursorPos( ImVec2(preview_width + 20, pos.y -height + 2.f * ImGui::GetFrameHeightWithSpacing()) );
ImGui::SetCursorPos( ImVec2(preview_width + 20, pos.y + 2.f * ImGui::GetFrameHeightWithSpacing()) );
const char *tooltip[2] = {"Unlocked", "Locked"};
bool l = s.locked();
if (ImGuiToolkit::IconToggle(15,6,17,6, &l, tooltip ) )
@@ -432,7 +436,7 @@ void ImGuiVisitor::visit (Source& s)
// toggle enable/disable image processing
bool on = s.imageProcessingEnabled();
ImGui::SetCursorPos( ImVec2(preview_width + 15, pos.y -ImGui::GetFrameHeight() ) );
ImGui::SetCursorPos( ImVec2(preview_width + 15, pos.y + 3.5f * ImGui::GetFrameHeightWithSpacing()) );
if ( ImGuiToolkit::ButtonToggle(ICON_FA_MAGIC, &on) ){
std::ostringstream oss;
oss << s.name() << ": " << ( on ? "Enable Filter" : "Disable Filter");
@@ -440,7 +444,7 @@ void ImGuiVisitor::visit (Source& s)
}
s.setImageProcessingEnabled(on);
ImGui::SetCursorPos(pos); // ...come back
ImGui::SetCursorPosY(pos.y + preview_height); // ...come back
// image processing pannel
if (s.imageProcessingEnabled())