Added zoom slider, zoom to settings, finished Framebuffer scaling

include/app.hpp

@@ -312,6 +312,7 @@ struct SVGScrew : FramebufferWidget {
 struct Toolbar : OpaqueWidget {
 	Slider *wireOpacitySlider;
 	Slider *wireTensionSlider;
+	Slider *zoomSlider;
 	RadioButton *cpuUsageButton;
 	RadioButton *plugLightButton;
 

include/gui.hpp

@@ -21,6 +21,8 @@ extern NVGcontext *gFramebufferVg;
 extern std::shared_ptr<Font> gGuiFont;
 extern float gPixelRatio;
 extern bool gAllowCursorLock;
+extern int gGuiFrame;
+extern Vec gMousePos;
 
 
 void guiInit();

include/math.hpp

@@ -191,6 +191,12 @@ struct Vec {
 	Vec round() {
 		return Vec(roundf(x), roundf(y));
 	}
+	Vec floor() {
+		return Vec(floorf(x), floorf(y));
+	}
+	Vec ceil() {
+		return Vec(ceilf(x), ceilf(y));
+	}
 	bool isZero() {
 		return x == 0.0 && y == 0.0;
 	}

include/widgets.hpp

@@ -216,10 +216,6 @@ Events are not passed to the underlying scene.
 struct FramebufferWidget : virtual Widget {
 	/** Set this to true to re-render the children to the framebuffer in the next step() override */
 	bool dirty = true;
-	/** A margin in pixels around the children in the framebuffer
-	This prevents cutting the rendered SVG off on the box edges.
-	*/
-	float oversample = 2.0;
 	/** The root object in the framebuffer scene
 	The FramebufferWidget owns the pointer
 	*/
@@ -353,6 +349,7 @@ struct Slider : OpaqueWidget, QuantityWidget {
 	void onDragStart() override;
 	void onDragMove(Vec mouseRel) override;
 	void onDragEnd() override;
+	void onMouseDownOpaque(int button) override;
 };
 
 /** Parent must be a ScrollWidget */
@@ -438,12 +435,10 @@ struct Scene : OpaqueWidget {
 // globals
 ////////////////////
 
-extern Vec gMousePos;
 extern Widget *gHoveredWidget;
 extern Widget *gDraggedWidget;
 extern Widget *gDragHoveredWidget;
 extern Widget *gFocusedWidget;
-extern int gGuiFrame;
 
 extern Scene *gScene;
 

src/app/RackScene.cpp

@@ -31,7 +31,6 @@ RackScene::RackScene() {
 	scrollWidget = new RackScrollWidget();
 	{
 		zoomWidget = new ZoomWidget();
-		zoomWidget->zoom = 0.5;
 		{
 			assert(!gRackWidget);
 			gRackWidget = new RackWidget();
@@ -63,6 +62,9 @@ void RackScene::step() {
 		.plus(Vec(500, 500))
 		.div(zoomWidget->zoom);
 
+	// Set zoom from the toolbar's zoom slider
+	zoomWidget->zoom = gToolbar->zoomSlider->value / 100.0;
+
 	Scene::step();
 
 	zoomWidget->box.size = gRackWidget->box.size.mult(zoomWidget->zoom);

src/app/RackScrollWidget.cpp

@@ -1,4 +1,5 @@
 #include "app.hpp"
+#include "gui.hpp"
 
 
 namespace rack {

src/app/RackWidget.cpp

@@ -189,9 +189,9 @@ void RackWidget::fromJson(json_t *rootJ) {
 	// version
 	json_t *versionJ = json_object_get(rootJ, "version");
 	if (versionJ) {
-		const char *version = json_string_value(versionJ);
-		if (gApplicationVersion != version)
-			message += stringf("This patch was created with Rack %s. Saving it will convert it to a Rack %s patch.\n\n", version, gApplicationVersion.c_str());
+		std::string version = json_string_value(versionJ);
+		if (!version.empty() && gApplicationVersion != version)
+			message += stringf("This patch was created with Rack %s. Saving it will convert it to a Rack %s patch.\n\n", version.c_str(), gApplicationVersion.empty() ? "dev" : gApplicationVersion.c_str());
 	}
 
 	// modules

src/app/Toolbar.cpp

@@ -139,13 +139,26 @@ Toolbar::Toolbar() {
 		wireTensionSlider->box.pos = Vec(xPos, margin);
 		wireTensionSlider->box.size.x = 150;
 		wireTensionSlider->label = "Cable tension";
-		// wireTensionSlider->unit = "";
+		wireTensionSlider->unit = "";
 		wireTensionSlider->setLimits(0.0, 1.0);
 		wireTensionSlider->setDefaultValue(0.5);
 		addChild(wireTensionSlider);
 		xPos += wireTensionSlider->box.size.x;
 	}
 
+	xPos += margin;
+	{
+		zoomSlider = new Slider();
+		zoomSlider->box.pos = Vec(xPos, margin);
+		zoomSlider->box.size.x = 150;
+		zoomSlider->label = "Zoom";
+		zoomSlider->unit = "%";
+		zoomSlider->setLimits(50.0, 200.0);
+		zoomSlider->setDefaultValue(100.0);
+		addChild(zoomSlider);
+		xPos += zoomSlider->box.size.x;
+	}
+
 	xPos += margin;
 	{
 		plugLightButton = new RadioButton();

src/app/WireWidget.cpp

@@ -1,6 +1,7 @@
 #include "app.hpp"
 #include "engine.hpp"
 #include "components.hpp"
+#include "gui.hpp"
 
 
 namespace rack {

src/gui.cpp

@@ -33,6 +33,8 @@ NVGcontext *gFramebufferVg = NULL;
 std::shared_ptr<Font> gGuiFont;
 float gPixelRatio = 0.0;
 bool gAllowCursorLock = true;
+int gGuiFrame;
+Vec gMousePos;
 
 
 void windowSizeCallback(GLFWwindow* window, int width, int height) {

src/settings.cpp

@@ -27,6 +27,11 @@ static json_t *settingsToJson() {
 	json_t *tensionJ = json_real(tension);
 	json_object_set_new(rootJ, "wireTension", tensionJ);
 
+	// zoom
+	float zoom = gToolbar->zoomSlider->value;
+	json_t *zoomJ = json_real(zoom);
+	json_object_set_new(rootJ, "zoom", zoomJ);
+
 	// allowCursorLock
 	json_t *allowCursorLockJ = json_boolean(gAllowCursorLock);
 	json_object_set_new(rootJ, "allowCursorLock", allowCursorLockJ);
@@ -62,6 +67,11 @@ static void settingsFromJson(json_t *rootJ) {
 	if (tensionJ)
 		gToolbar->wireTensionSlider->value = json_number_value(tensionJ);
 
+	// zoom
+	json_t *zoomJ = json_object_get(rootJ, "zoom");
+	if (zoomJ)
+		gToolbar->zoomSlider->value = json_number_value(zoomJ);
+
 	// allowCursorLock
 	json_t *allowCursorLockJ = json_object_get(rootJ, "allowCursorLock");
 	if (allowCursorLockJ)

src/widgets.cpp

@@ -2,12 +2,10 @@
 
 namespace rack {
 
-Vec gMousePos;
 Widget *gHoveredWidget = NULL;
 Widget *gDraggedWidget = NULL;
 Widget *gDragHoveredWidget = NULL;
 Widget *gFocusedWidget = NULL;
-int gGuiFrame;
 
 Scene *gScene = NULL;
 

src/widgets/FramebufferWidget.cpp

@@ -9,9 +9,16 @@
 namespace rack {
 
 
+/** A margin in pixels around the children in the framebuffer
+This prevents cutting the rendered SVG off on the box edges.
+*/
+static const float oversample = 2.0;
+
+
 struct FramebufferWidget::Internal {
 	NVGLUframebuffer *fb = NULL;
 	Rect box;
+	Vec lastS;
 
 	~Internal() {
 		setFramebuffer(NULL);
@@ -33,10 +40,31 @@ FramebufferWidget::~FramebufferWidget() {
 }
 
 void FramebufferWidget::draw(NVGcontext *vg) {
+	// Bypass framebuffer rendering entirely
+	// Widget::draw(vg);
+	// return;
+
+	// Get world transform
+	float xform[6];
+	nvgCurrentTransform(vg, xform);
+	// Skew is not supported
+	assert(fabsf(xform[1]) < 1e-6);
+	assert(fabsf(xform[2]) < 1e-6);
+	Vec s = Vec(xform[0], xform[3]);
+	Vec b = Vec(xform[4], xform[5]);
+
+	if (gGuiFrame % 10 == 0) {
+		// Check if scale has changed
+		if (s.x != internal->lastS.x || s.y != internal->lastS.y) {
+			dirty = true;
+		}
+		internal->lastS = s;
+	}
+
+	// Render to framebuffer
 	if (dirty) {
 		internal->box.pos = Vec(0, 0);
-		internal->box.size = box.size;
-		internal->box.size = Vec(ceilf(internal->box.size.x), ceilf(internal->box.size.y));
+		internal->box.size = box.size.mult(s).ceil();
 		Vec fbSize = internal->box.size.mult(gPixelRatio * oversample);
 
 		// assert(fbSize.isFinite());
@@ -60,6 +88,8 @@ void FramebufferWidget::draw(NVGcontext *vg) {
 		nvgBeginFrame(gFramebufferVg, fbSize.x, fbSize.y, gPixelRatio * oversample);
 
 		nvgScale(gFramebufferVg, gPixelRatio * oversample, gPixelRatio * oversample);
+		// Use local scaling
+		nvgScale(gFramebufferVg, s.x, s.y);
 		Widget::draw(gFramebufferVg);
 
 		nvgEndFrame(gFramebufferVg);
@@ -72,32 +102,24 @@ void FramebufferWidget::draw(NVGcontext *vg) {
 		return;
 	}
 
-	// Draw framebuffer image
+	// Draw framebuffer image, using world coordinates
+	b = b.round();
+	nvgSave(vg);
+	nvgResetTransform(vg);
+	nvgTranslate(vg, b.x, b.y);
+
 	nvgBeginPath(vg);
 	nvgRect(vg, internal->box.pos.x, internal->box.pos.y, internal->box.size.x, internal->box.size.y);
 	NVGpaint paint = nvgImagePattern(vg, internal->box.pos.x, internal->box.pos.y, internal->box.size.x, internal->box.size.y, 0.0, internal->fb->image, 1.0);
 	nvgFillPaint(vg, paint);
 	nvgFill(vg);
 
-	// For debugging bounding box of framebuffer image
-	// nvgFillColor(vg, nvgRGBA(255, 0, 0, 64));
-	// nvgFill(vg);
-
-	{
-		float xform[6];
-		nvgCurrentTransform(vg, xform);
-		// printf("%f %f %f %f; %f %f\n", xform[0], xform[1], xform[2], xform[3], xform[4], xform[5]);
-		nvgSave(vg);
-		nvgResetTransform(vg);
-		nvgTranslate(vg, xform[4], xform[5]);
-		nvgScale(vg, xform[0], xform[3]);
-		nvgBeginPath(vg);
-		nvgRect(vg, 0, 0, internal->box.size.x, internal->box.size.y);
-		nvgStrokeWidth(vg, 2.0);
-		nvgStrokeColor(vg, nvgRGBf(1.0, 0.0, 0.0));
-		nvgStroke(vg);
-		nvgRestore(vg);
-	}
+	// For debugging the bounding box of the framebuffer
+	// nvgStrokeWidth(vg, 2.0);
+	// nvgStrokeColor(vg, nvgRGBA(255, 0, 0, 128));
+	// nvgStroke(vg);
+
+	nvgRestore(vg);
 }
 
 int FramebufferWidget::getImageHandle() {

src/widgets/Scene.cpp

@@ -1,4 +1,5 @@
 #include "widgets.hpp"
+#include "gui.hpp"
 
 
 namespace rack {

src/widgets/Slider.cpp

@@ -25,5 +25,11 @@ void Slider::onDragEnd() {
 	guiCursorUnlock();
 }
 
+void Slider::onMouseDownOpaque(int button) {
+	if (button == 1) {
+		setValue(defaultValue);
+	}
+}
+
 
 } // namespace rack

src/widgets/TextField.cpp

@@ -18,6 +18,10 @@ void TextField::draw(NVGcontext *vg) {
 		state = BND_DEFAULT;
 
 	bndTextField(vg, 0.0, 0.0, box.size.x, box.size.y, BND_CORNER_NONE, state, -1, text.c_str(), begin, end);
+	// Draw placeholder text
+	if (text.empty() && state != BND_ACTIVE) {
+		bndIconLabelCaret(vg, 0.0, 0.0, box.size.x, box.size.y, -1, bndGetTheme()->textFieldTheme.itemColor, 13, placeholder.c_str(), bndGetTheme()->textFieldTheme.itemColor, 0, -1);
+	}
 }
 
 Widget *TextField::onMouseDown(Vec pos, int button) {

src/widgets/Tooltip.cpp

@@ -1,4 +1,5 @@
 #include "widgets.hpp"
+#include "gui.hpp"
 
 
 namespace rack {