Added resize transitions

6 files changed, 124 insertions, 12 deletions

diff --git a/src/render/Framebuffer.cpp b/src/render/Framebuffer.cpp
index 33bf321b..a1b45fc8 100644
--- a/src/render/Framebuffer.cpp
+++ b/src/render/Framebuffer.cpp
@@ -27,7 +27,6 @@ bool CFramebuffer::alloc(int w, int h) {
         glBindFramebuffer(GL_FRAMEBUFFER, m_iFb);
         glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, m_cTex.m_iTexID, 0);
 
-
         // TODO: Allow this with gles2
         #ifndef GLES2
         if (m_pStencilTex) {
@@ -80,3 +79,7 @@ void CFramebuffer::release() {
 CFramebuffer::~CFramebuffer() {
     release();
 }
+
+bool CFramebuffer::isAllocated() {
+    return m_iFb != (GLuint)-1;
+}
\ No newline at end of file
diff --git a/src/render/Framebuffer.hpp b/src/render/Framebuffer.hpp
index 6af59ca2..2d1e621c 100644
--- a/src/render/Framebuffer.hpp
+++ b/src/render/Framebuffer.hpp
@@ -12,6 +12,7 @@ public:
     void bind();
     void release();
     void reset();
+    bool isAllocated();
 
     Vector2D        m_Position;
     Vector2D        m_Size;
diff --git a/src/render/OpenGL.cpp b/src/render/OpenGL.cpp
index 7d3ac39e..bcf91258 100644
--- a/src/render/OpenGL.cpp
+++ b/src/render/OpenGL.cpp
@@ -905,6 +905,61 @@ void CHyprOpenGLImpl::renderBorder(wlr_box* box, const CColor& col, int round) {
     glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
 }
 
+void CHyprOpenGLImpl::makeRawWindowSnapshot(CWindow* pWindow, CFramebuffer* pFramebuffer) {
+    // we trust the window is valid.
+    const auto PMONITOR = g_pCompositor->getMonitorFromID(pWindow->m_iMonitorID);
+    wlr_output_attach_render(PMONITOR->output, nullptr);
+
+    // we need to "damage" the entire monitor
+    // so that we render the entire window
+    // this is temporary, doesnt mess with the actual wlr damage
+    pixman_region32_t fakeDamage;
+    pixman_region32_init(&fakeDamage);
+    pixman_region32_union_rect(&fakeDamage, &fakeDamage, 0, 0, (int)PMONITOR->vecTransformedSize.x, (int)PMONITOR->vecTransformedSize.y);
+
+    begin(PMONITOR, &fakeDamage, true);
+
+    clear(CColor(0, 0, 0, 0));  // JIC
+
+    timespec now;
+    clock_gettime(CLOCK_MONOTONIC, &now);
+
+    // this is a hack but it works :P
+    // we need to disable blur or else we will get a black background, as the shader
+    // will try to copy the bg to apply blur.
+    // this isn't entirely correct, but like, oh well.
+    // small todo: maybe make this correct? :P
+    const auto BLURVAL = g_pConfigManager->getInt("decoration:blur");
+    g_pConfigManager->setInt("decoration:blur", 0);
+
+    // TODO: how can we make this the size of the window? setting it to window's size makes the entire screen render with the wrong res forever more. odd.
+    glViewport(0, 0, PMONITOR->vecPixelSize.x, PMONITOR->vecPixelSize.y);
+
+    pFramebuffer->m_pStencilTex = &m_RenderData.pCurrentMonData->stencilTex;
+
+    pFramebuffer->alloc(PMONITOR->vecPixelSize.x, PMONITOR->vecPixelSize.y);
+
+    pFramebuffer->bind();
+
+    clear(CColor(0, 0, 0, 0));  // JIC
+
+    g_pHyprRenderer->renderWindow(pWindow, PMONITOR, &now, false, RENDER_PASS_ALL, true);
+
+    g_pConfigManager->setInt("decoration:blur", BLURVAL);
+
+// restore original fb
+#ifndef GLES2
+    glBindFramebuffer(GL_DRAW_FRAMEBUFFER, m_iCurrentOutputFb);
+#else
+    glBindFramebuffer(GL_FRAMEBUFFER, m_iCurrentOutputFb);
+#endif
+    end();
+
+    pixman_region32_fini(&fakeDamage);
+
+    wlr_output_rollback(PMONITOR->output);
+}
+
 void CHyprOpenGLImpl::makeWindowSnapshot(CWindow* pWindow) {
     // we trust the window is valid.
     const auto PMONITOR = g_pCompositor->getMonitorFromID(pWindow->m_iMonitorID);
@@ -919,7 +974,7 @@ void CHyprOpenGLImpl::makeWindowSnapshot(CWindow* pWindow) {
 
     begin(PMONITOR, &fakeDamage, true);
 
-    clear(CColor(0,0,0,0)); // JIC
+    clear(CColor(0, 0, 0, 0));  // JIC
 
     timespec now;
     clock_gettime(CLOCK_MONOTONIC, &now);
@@ -932,10 +987,9 @@ void CHyprOpenGLImpl::makeWindowSnapshot(CWindow* pWindow) {
     const auto BLURVAL = g_pConfigManager->getInt("decoration:blur");
     g_pConfigManager->setInt("decoration:blur", 0);
 
-    // render onto the window fb
-    const auto PFRAMEBUFFER = &m_mWindowFramebuffers[pWindow];
+    glViewport(0, 0, m_RenderData.pMonitor->vecPixelSize.x, m_RenderData.pMonitor->vecPixelSize.y);
 
-    glViewport(0, 0, g_pHyprOpenGL->m_RenderData.pMonitor->vecPixelSize.x, g_pHyprOpenGL->m_RenderData.pMonitor->vecPixelSize.y);
+    const auto PFRAMEBUFFER = &m_mWindowFramebuffers[pWindow];
 
     PFRAMEBUFFER->m_pStencilTex = &m_RenderData.pCurrentMonData->stencilTex;
 
@@ -949,12 +1003,12 @@ void CHyprOpenGLImpl::makeWindowSnapshot(CWindow* pWindow) {
 
     g_pConfigManager->setInt("decoration:blur", BLURVAL);
 
-    // restore original fb
-    #ifndef GLES2
+// restore original fb
+#ifndef GLES2
     glBindFramebuffer(GL_DRAW_FRAMEBUFFER, m_iCurrentOutputFb);
-    #else
+#else
     glBindFramebuffer(GL_FRAMEBUFFER, m_iCurrentOutputFb);
-    #endif
+#endif
     end();
 
     pixman_region32_fini(&fakeDamage);
@@ -1014,6 +1068,32 @@ void CHyprOpenGLImpl::makeLayerSnapshot(SLayerSurface* pLayer) {
     wlr_output_rollback(PMONITOR->output);
 }
 
+void CHyprOpenGLImpl::onWindowResizeStart(CWindow* pWindow) {
+    static auto *const PTRANSITIONS = &g_pConfigManager->getConfigValuePtr("animations:use_resize_transitions")->intValue;
+    static auto *const PENABLED = &g_pConfigManager->getConfigValuePtr("animations:enabled")->intValue;
+
+    if (!*PTRANSITIONS || !*PENABLED)
+        return;
+
+    if (pWindow->m_vRealSize.vec().x < 5 || pWindow->m_vRealSize.vec().y < 5)
+        return;
+
+    // make a fb and render a snapshot
+    const auto PFRAMEBUFFER = &m_mWindowResizeFramebuffers[pWindow];
+    makeRawWindowSnapshot(pWindow, PFRAMEBUFFER);
+}
+
+void CHyprOpenGLImpl::onWindowResizeEnd(CWindow* pWindow) {
+    static auto *const PTRANSITIONS = &g_pConfigManager->getConfigValuePtr("animations:use_resize_transitions")->intValue;
+    static auto *const PENABLED = &g_pConfigManager->getConfigValuePtr("animations:enabled")->intValue;
+
+    if (!*PTRANSITIONS || !*PENABLED)
+        return;
+
+    // remove the fb
+    m_mWindowResizeFramebuffers.erase(pWindow);
+}
+
 void CHyprOpenGLImpl::renderSnapshot(CWindow** pWindow) {
     RASSERT(m_RenderData.pMonitor, "Tried to render snapshot rect without begin()!");
     const auto PWINDOW = *pWindow;
diff --git a/src/render/OpenGL.hpp b/src/render/OpenGL.hpp
index b62732f6..dbc2977c 100644
--- a/src/render/OpenGL.hpp
+++ b/src/render/OpenGL.hpp
@@ -83,6 +83,7 @@ public:
     void    renderBorder(wlr_box*, const CColor&, int round);
 
     void    makeWindowSnapshot(CWindow*);
+    void    makeRawWindowSnapshot(CWindow*, CFramebuffer*);
     void    makeLayerSnapshot(SLayerSurface*);
     void    renderSnapshot(CWindow**);
     void    renderSnapshot(SLayerSurface**);
@@ -103,6 +104,9 @@ public:
     void    saveBufferForMirror();
     void    renderMirrored();
 
+    void    onWindowResizeStart(CWindow*);
+    void    onWindowResizeEnd(CWindow*);
+
     SCurrentRenderData m_RenderData;
 
     GLint  m_iCurrentOutputFb = 0;
@@ -113,6 +117,7 @@ public:
     pixman_region32_t m_rOriginalDamageRegion; // used for storing the pre-expanded region
 
     std::unordered_map<CWindow*, CFramebuffer> m_mWindowFramebuffers;
+    std::unordered_map<CWindow*, CFramebuffer> m_mWindowResizeFramebuffers;
     std::unordered_map<SLayerSurface*, CFramebuffer> m_mLayerFramebuffers;
     std::unordered_map<CMonitor*, SMonitorRenderData> m_mMonitorRenderResources;
     std::unordered_map<CMonitor*, CTexture> m_mMonitorBGTextures;
diff --git a/src/render/Renderer.cpp b/src/render/Renderer.cpp
index 420b45be..60238144 100644
--- a/src/render/Renderer.cpp
+++ b/src/render/Renderer.cpp
@@ -215,7 +215,7 @@ void CHyprRenderer::renderWorkspaceWithFullscreenWindow(CMonitor* pMonitor, CWor
         g_pHyprError->draw();
 }
 
-void CHyprRenderer::renderWindow(CWindow* pWindow, CMonitor* pMonitor, timespec* time, bool decorate, eRenderPassMode mode) {
+void CHyprRenderer::renderWindow(CWindow* pWindow, CMonitor* pMonitor, timespec* time, bool decorate, eRenderPassMode mode, bool ignorePosition) {
     if (pWindow->isHidden())
         return;
 
@@ -227,9 +227,15 @@ void CHyprRenderer::renderWindow(CWindow* pWindow, CMonitor* pMonitor, timespec*
 
     const auto PWORKSPACE = g_pCompositor->getWorkspaceByID(pWindow->m_iWorkspaceID);
     const auto REALPOS = pWindow->m_vRealPosition.vec() + (pWindow->m_bPinned ? Vector2D{} : PWORKSPACE->m_vRenderOffset.vec());
-    static const auto PNOFLOATINGBORDERS = &g_pConfigManager->getConfigValuePtr("general:no_border_on_floating")->intValue;
+    static auto *const PNOFLOATINGBORDERS = &g_pConfigManager->getConfigValuePtr("general:no_border_on_floating")->intValue;
+    static auto *const PTRANSITIONS = &g_pConfigManager->getConfigValuePtr("animations:use_resize_transitions")->intValue;
 
     SRenderData renderdata = {pMonitor->output, time, REALPOS.x, REALPOS.y};
+    if (ignorePosition) {
+        renderdata.x = 0;
+        renderdata.y = 0;
+    }
+
     renderdata.surface = g_pXWaylandManager->getWindowSurface(pWindow);
     renderdata.w = std::max(pWindow->m_vRealSize.vec().x, 5.0); // clamp the size to min 5,
     renderdata.h = std::max(pWindow->m_vRealSize.vec().y, 5.0); // otherwise we'll have issues later with invalid boxes
@@ -288,6 +294,23 @@ void CHyprRenderer::renderWindow(CWindow* pWindow, CMonitor* pMonitor, timespec*
 
         wlr_surface_for_each_surface(g_pXWaylandManager->getWindowSurface(pWindow), renderSurface, &renderdata);
 
+        if (*PTRANSITIONS && !ignorePosition /* ignorePosition probably means we are rendering the snapshot rn */) {
+            const auto PFB = g_pHyprOpenGL->m_mWindowResizeFramebuffers.find(pWindow);
+
+            if (PFB != g_pHyprOpenGL->m_mWindowResizeFramebuffers.end() && PFB->second.isAllocated()) {
+                wlr_box box = {renderdata.x, renderdata.y, renderdata.w, renderdata.h};
+
+                // adjust UV (remove when I figure out how to change the size of the fb)
+                g_pHyprOpenGL->m_RenderData.primarySurfaceUVTopLeft = {0, 0};
+                g_pHyprOpenGL->m_RenderData.primarySurfaceUVBottomRight = { pWindow->m_vRealSize.m_vBegun.x / pMonitor->vecPixelSize.x, pWindow->m_vRealSize.m_vBegun.y / pMonitor->vecPixelSize.y};
+
+                g_pHyprOpenGL->renderTexture(PFB->second.m_cTex, &box, (1.f - pWindow->m_vRealSize.getPercent()) * 84.f, 0, false, true);
+
+                g_pHyprOpenGL->m_RenderData.primarySurfaceUVTopLeft = Vector2D(-1, -1);
+                g_pHyprOpenGL->m_RenderData.primarySurfaceUVBottomRight = Vector2D(-1, -1);
+            }
+        }
+
         if (renderdata.decorate && pWindow->m_sSpecialRenderData.border) {
             static auto *const PROUNDING = &g_pConfigManager->getConfigValuePtr("decoration:rounding")->intValue;
 
diff --git a/src/render/Renderer.hpp b/src/render/Renderer.hpp
index 74fc0a9a..8bd65418 100644
--- a/src/render/Renderer.hpp
+++ b/src/render/Renderer.hpp
@@ -54,7 +54,7 @@ public:
 private:
     void                arrangeLayerArray(CMonitor*, const std::vector<std::unique_ptr<SLayerSurface>>&, bool, wlr_box*);
     void                renderWorkspaceWithFullscreenWindow(CMonitor*, CWorkspace*, timespec*);
-    void                renderWindow(CWindow*, CMonitor*, timespec*, bool, eRenderPassMode);
+    void                renderWindow(CWindow*, CMonitor*, timespec*, bool, eRenderPassMode, bool ignorePosition = false);
     void                renderLayer(SLayerSurface*, CMonitor*, timespec*);
     void                renderDragIcon(CMonitor*, timespec*);
     void                renderIMEPopup(SIMEPopup*, CMonitor*, timespec*);