Fix hard crash in case of a unwritable Latex Output file. Print warnign instead of hard stop

Add github status badge for CI

.github/workflows/cmake.yml

@@ -0,0 +1,37 @@
+name: CMake
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+env:
+  # Customize the CMake build type here (Release, Debug, RelWithDebInfo, etc.)
+  BUILD_TYPE: Release
+
+jobs:
+  build:
+    # The CMake configure and build commands are platform agnostic and should work equally
+    # well on Windows or Mac.  You can convert this to a matrix build if you need
+    # cross-platform coverage.
+    # See: https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    
+    - name: Install system dependencies
+      if: runner.os == 'Linux'
+      run: |
+        sudo apt-get update
+        sudo apt-get -y install libgtk-3-dev gettext
+
+    - name: Configure CMake
+      # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
+      # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type
+      run: cmake -B ${{github.workspace}}/build -DCMAKE_BUILD_TYPE=${{env.BUILD_TYPE}}
+
+    - name: Build
+      # Build your program with the given configuration
+      run: cmake --build ${{github.workspace}}/build --config ${{env.BUILD_TYPE}}

README.MD

@@ -1,5 +1,7 @@
 # GDS-Render Readme
 
+[![CMake](https://github.com/0mhu/gds-render/actions/workflows/cmake.yml/badge.svg?branch=master)](https://github.com/0mhu/gds-render/actions/workflows/cmake.yml)
+
 This software is a rendering programm for GDS2 layout files.
 The GDS2 format is mainly used in integrated circuit development.
 This program allows the conversion of a GDS file to a vector graphics file.

gds-render-gui.c

@@ -187,7 +187,8 @@ static gboolean cell_store_filter_visible_func(GtkTreeModel *model, GtkTreeIter
 
 	gtk_tree_model_get(model, iter, CELL_SEL_CELL, &cell, CELL_SEL_LIBRARY, &lib, -1);
 
-	if (lib) {
+    /* Show always, if this is a pure lib entry */
+    if (lib && !cell) {
 		result = TRUE;
 		goto exit_filter;
 	}

layer/color-palette.c

@@ -238,6 +238,7 @@ static void color_palette_dispose(GObject *gobj)
 	if (palette->color_array) {
 		palette->color_array_length = 0;
 		free(palette->color_array);
+		palette->color_array = NULL;
 	}
 
 	/* Chain up to parent class */

output-renderers/latex-renderer.c

@@ -370,7 +370,7 @@ static int latex_renderer_render_output(GdsOutputRenderer *renderer,
 						l_renderer->pdf_layers, l_renderer->tex_standalone, renderer);
 		fclose(tex_file);
 	} else {
-		g_error(_("Could not open LaTeX output file"));
+        g_warning(_("Could not open LaTeX output file"));
 	}
 
 	if (settings)