Impl changing window size

src/imgui_helper.hpp

@@ -96,13 +96,33 @@ namespace Tri {
             } else if(ImGui::Button("Cancel")) {
                 state->close_save();
             }
-            auto string_view = state->failed_save_message();
+            auto string_view = state->failed_message();
             if(!string_view.empty()) {
                 ImGui::TextUnformatted(string_view.data(), string_view.data() + string_view.size());
             }
             ImGui::End();
         }
     }
+
+    inline void draw_change_size(Tri::State *state) {
+        if(state->get_flags().test(10)) {
+            ImGui::Begin("ChangeSize");
+            ImGui::InputInt2("Width and Height", state->get_input_width_height());
+            auto string_view = state->failed_message();
+            if(!string_view.empty()) {
+                ImGui::TextUnformatted(string_view.data(), string_view.data() + string_view.size());
+            }
+            if(ImGui::Button("Cancel")) {
+                state->close_input_width_height_window();
+            }
+            if(ImGui::Button("Set")) {
+                if(state->change_width_height()) {
+                    state->close_input_width_height_window();
+                }
+            }
+            ImGui::End();
+        }
+    }
 }
 
 #endif

src/state.cpp

@@ -25,7 +25,8 @@ currentTri_state(CurrentState::NONE),
 currentTri_maxState(CurrentState::NONE),
 colorPickerColor{1.0f, 1.0f, 1.0f, 1.0f},
 bgColorPickerColor{0.0f, 0.0f, 0.0f},
-bgColor(sf::Color::Black)
+bgColor(sf::Color::Black),
+inputWidthHeight{800, 600}
 {
     flags.set(1); // is running
     ImGui::SFML::Init(window);
@@ -67,6 +68,7 @@ void Tri::State::handle_events() {
             flags.reset(1);
         } else if(event.type == sf::Event::KeyPressed) {
             if(!flags.test(6)) {
+                // TODO use a switch statement
                 if(event.key.code == sf::Keyboard::H) {
                     flags.flip(0);
                 } else if(event.key.code == sf::Keyboard::U) {
@@ -144,6 +146,12 @@ void Tri::State::handle_events() {
                     } else {
                         notification_alpha = 0.0f;
                     }
+                } else if(event.key.code == sf::Keyboard::I) {
+                    flags.flip(10);
+                    if(!flags.test(10)) {
+                        inputWidthHeight[0] = width;
+                        inputWidthHeight[1] = height;
+                    }
                 }
             }
         } else if(event.type == sf::Event::MouseButtonPressed) {
@@ -228,6 +236,7 @@ void Tri::State::update() {
     Tri::draw_notification(this);
     Tri::draw_color_picker(this);
     Tri::draw_bg_color_picker(this);
+    Tri::draw_change_size(this);
     Tri::draw_save(this);
     Tri::draw_help(this);
 
@@ -308,7 +317,7 @@ bool Tri::State::do_save() {
 #ifndef NDEBUG
         puts("ERROR: Failed to create texture for saving");
 #endif
-        failedSaveMessage = std::string("Failed to create texture for saving");
+        failedMessage = std::string("Failed to create texture for saving");
         return false;
     }
 
@@ -321,19 +330,19 @@ bool Tri::State::do_save() {
 #ifndef NDEBUG
         printf("Saved to \"%s\"\n", filename.c_str());
 #endif
-        failedSaveMessage.clear();
+        failedMessage.clear();
         return true;
     } else {
 #ifndef NDEBUG
         printf("ERROR: Failed to save \"%s\"\n", filename.c_str());
 #endif
-        failedSaveMessage = std::string("Failed to save (does the name end in \".png\"?)");
+        failedMessage = std::string("Failed to save (does the name end in \".png\"?)");
         return false;
     }
 }
 
-std::string_view Tri::State::failed_save_message() const {
+std::string_view Tri::State::failed_message() const {
-    return failedSaveMessage;
+    return failedMessage;
 }
 
 void Tri::State::close_save() {
@@ -345,7 +354,8 @@ bool Tri::State::can_draw() const {
         && !flags.test(2)
         && !flags.test(5)
         && !flags.test(6)
-        && !flags.test(9);
+        && !flags.test(9)
+        && !flags.test(10);
 }
 
 void Tri::State::close_help() {
@@ -361,3 +371,67 @@ void Tri::State::close_bg_color_picker() {
     flags.reset(5);
     flags.set(7);
 }
+
+bool Tri::State::change_width_height() {
+    std::bitset<2> warnings;
+    if(inputWidthHeight[0] < 0 || inputWidthHeight[1] < 0) {
+        failedMessage = "Width or Height cannot be less than 0";
+        return false;
+    }
+    if(inputWidthHeight[0] < 200) {
+        inputWidthHeight[0] = 200;
+        warnings.set(0);
+    }
+    if(inputWidthHeight[1] < 150) {
+        inputWidthHeight[1] = 150;
+        warnings.set(1);
+    }
+
+    if(warnings.test(0) && warnings.test(1)) {
+        notification_alpha = 1.0f;
+        notification_text.fill(0);
+        std::strcpy(
+            notification_text.data(),
+            "Width set to 200\nHeight set to 150"
+        );
+    } else if(warnings.test(0)) {
+        notification_alpha = 1.0f;
+        notification_text.fill(0);
+        std::strcpy(
+            notification_text.data(),
+            "Width set to 200"
+        );
+    } else if(warnings.test(1)) {
+        notification_alpha = 1.0f;
+        notification_text.fill(0);
+        std::strcpy(
+            notification_text.data(),
+            "Height set to 150"
+        );
+    }
+
+    this->width = inputWidthHeight[0];
+    this->height = inputWidthHeight[1];
+
+    window.setSize(sf::Vector2u(width, height));
+    sf::View newView(
+        sf::Vector2f(width / 2.0f, height / 2.0f),
+        sf::Vector2f(width, height));
+    window.setView(newView);
+
+    drawCache.create(width, height);
+    drawCacheSprite.setTexture(drawCache.getTexture(), true);
+    flags.set(7);
+
+    currentTri_state = CurrentState::NONE;
+
+    return true;
+}
+
+int* Tri::State::get_input_width_height() {
+    return inputWidthHeight;
+}
+
+void Tri::State::close_input_width_height_window() {
+    flags.reset(10);
+}

src/state.hpp

@@ -27,6 +27,7 @@ namespace Tri {
          * 7 - draw cache dirty
          * 8 - draw cache initialized
          * 9 - copy color mode
+         * 10 - display change size
          */
         typedef std::bitset<64> BitsetType;
         BitsetType flags;
@@ -53,11 +54,13 @@ namespace Tri {
 
         typedef std::array<char, 256> FilenameBufferType;
         FilenameBufferType saveFilenameBuffer;
-        std::string failedSaveMessage;
+        std::string failedMessage;
 
         sf::RenderTexture drawCache;
         sf::Sprite drawCacheSprite;
 
+        int inputWidthHeight[2];
+
     public:
         void handle_events();
         void update();
@@ -80,7 +83,7 @@ namespace Tri {
 
         FilenameBufferType* get_save_filename_buffer();
         bool do_save();
-        std::string_view failed_save_message() const;
+        std::string_view failed_message() const;
         void close_save();
 
     private:
@@ -91,6 +94,10 @@ namespace Tri {
         void close_color_picker();
         void close_bg_color_picker();
 
+        bool change_width_height();
+        int* get_input_width_height();
+        void close_input_width_height_window();
+
     };
 }