Added HyprError for showing config errors

1 files changed, 109 insertions, 0 deletions

diff --git a/src/hyprerror/HyprError.cpp b/src/hyprerror/HyprError.cpp
new file mode 100644
index 00000000..524fce2d
--- /dev/null
+++ b/src/hyprerror/HyprError.cpp
@@ -0,0 +1,109 @@
+#include "HyprError.hpp"
+#include "../Compositor.hpp"
+
+void CHyprError::queueCreate(std::string message, const CColor& color) {
+    m_szQueued = message;
+    m_cQueued = color;
+}
+
+void CHyprError::createQueued() {
+    if (m_bIsCreated) {
+        m_bQueuedDestroy = false;
+        m_tTexture.destroyTexture();
+    }
+
+    const auto PMONITOR = &g_pCompositor->m_lMonitors.front();
+
+    const auto CAIROSURFACE = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, PMONITOR->vecSize.x, PMONITOR->vecSize.y);
+
+    const auto CAIRO = cairo_create(CAIROSURFACE);
+
+    // clear the pixmap
+    cairo_save(CAIRO);
+    cairo_set_operator(CAIRO, CAIRO_OPERATOR_CLEAR);
+    cairo_paint(CAIRO);
+    cairo_restore(CAIRO);
+
+    const auto LINECOUNT = 1 + std::count(m_szQueued.begin(), m_szQueued.end(), '\n');
+
+    cairo_set_source_rgba(CAIRO, m_cQueued.r / 255.f, m_cQueued.g / 255.f, m_cQueued.b / 255.f, m_cQueued.a / 255.f);
+    cairo_rectangle(CAIRO, 0, 0, PMONITOR->vecSize.x, 10 * LINECOUNT);
+
+    // outline
+    cairo_rectangle(CAIRO, 0, 0, 1, PMONITOR->vecSize.y); // left
+    cairo_rectangle(CAIRO, PMONITOR->vecSize.x - 1, 0, PMONITOR->vecSize.x, PMONITOR->vecSize.y);  // right
+    cairo_rectangle(CAIRO, 0, PMONITOR->vecSize.y - 1, PMONITOR->vecSize.x, PMONITOR->vecSize.y);  // bottom
+
+    cairo_fill(CAIRO);
+
+    // draw the text with a common font
+    const CColor textColor = m_cQueued.r * m_cQueued.g * m_cQueued.b < 0.5f ? CColor(255, 255, 255, 255) : CColor(0, 0, 0, 255);
+
+    cairo_select_font_face(CAIRO, "Noto Sans", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
+    cairo_set_font_size(CAIRO, 8);
+    cairo_set_source_rgba(CAIRO, textColor.r / 255.f, textColor.g / 255.f, textColor.b / 255.f, textColor.a / 255.f);
+
+    float yoffset = 8;
+    while(m_szQueued != "") {
+        std::string current = m_szQueued.substr(0, m_szQueued.find('\n'));
+        if (const auto NEWLPOS = m_szQueued.find('\n'); NEWLPOS != std::string::npos)
+            m_szQueued = m_szQueued.substr(NEWLPOS + 1);
+        else
+            m_szQueued = "";
+        cairo_move_to(CAIRO, 0, yoffset);
+        cairo_show_text(CAIRO, current.c_str());
+        yoffset += 9;
+    }
+    
+
+    cairo_surface_flush(CAIROSURFACE);
+
+    // copy the data to an OpenGL texture we have
+    const auto DATA = cairo_image_surface_get_data(CAIROSURFACE);
+    m_tTexture.allocate();
+    glBindTexture(GL_TEXTURE_2D, m_tTexture.m_iTexID);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_R, GL_BLUE);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_B, GL_RED);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, PMONITOR->vecSize.x, PMONITOR->vecSize.y, 0, GL_RGBA, GL_UNSIGNED_BYTE, DATA);
+
+    // delete cairo
+    cairo_destroy(CAIRO);
+    cairo_surface_destroy(CAIROSURFACE);
+
+    m_bIsCreated = true;
+    m_szQueued = "";
+    m_cQueued = CColor();
+}
+
+void CHyprError::draw() {
+    if (!m_bIsCreated) {
+        if (m_szQueued != "")
+            createQueued();
+        return;
+    }
+
+    if (m_bQueuedDestroy) {
+        m_bQueuedDestroy = false;
+        m_tTexture.destroyTexture();
+        m_bIsCreated = false;
+        return;
+    }
+
+    const auto PMONITOR = &g_pCompositor->m_lMonitors.front();
+
+    if (g_pHyprOpenGL->m_RenderData.pMonitor != PMONITOR)
+        return; // wrong mon
+
+    const auto TRANSFORM = wlr_output_transform_invert(WL_OUTPUT_TRANSFORM_NORMAL);
+    float matrix[9];
+    wlr_box windowBox = {0, 0, PMONITOR->vecSize.x, PMONITOR->vecSize.y};
+    wlr_matrix_project_box(matrix, &windowBox, TRANSFORM, 0, PMONITOR->output->transform_matrix);
+
+    g_pHyprOpenGL->renderTexture(m_tTexture, matrix, 255.f, 0);
+}
+
+void CHyprError::destroy() {
+    m_bQueuedDestroy = true;
+}
\ No newline at end of file