Add FTGL dependency and text all the things

pui/Makefile

@@ -1,10 +1,11 @@
 CFLAGS := -Wall -O3 -g -D_GNU_SOURCE
 LDFLAGS := -lm
 
-CFLAGS += `pkg-config pugl-0 --cflags`
-LDFLAGS += `pkg-config pugl-0 --libs`
+CFLAGS += `pkg-config ftgl pugl-0 --cflags`
+LDFLAGS += `pkg-config ftgl pugl-0 --libs`
 
 PUISRC := container.cpp
+PUISRC += label.cpp
 PUISRC += knob.cpp
 PUISRC += pui.cpp
 PUISRC += slider.cpp

pui/label.cpp

@@ -0,0 +1,34 @@
+#include <cstring>
+#include <FTGL/ftgl.h>
+#include <pugl/pugl.h>
+#include "pui.h"
+
+void Label::OnPaint(const PUi *pui) const
+{
+//	if (this->dirty) {
+		/* Update bounding box */
+		FTBBox box = pui->font->BBox(this->text);
+		FTPoint p = box.Upper() - box.Lower();
+		float cx = p.X();
+		float cy = p.Y();
+//	}
+
+	float ox = -.5f;
+	float oy = 0;
+
+	glPushMatrix();
+	glColor4f(colour.r, colour.g, colour.b, colour.a);
+	glTranslatef(x + w * 0.5f, y + h * 0.5f + 10, 0);
+	glScalef(.6f, -.6f, 1);
+	glTranslatef(cx * ox, cy * oy, 0);
+	pui->font->Render(this->text);
+	glPopMatrix();
+}
+
+void Label::SetLabel(const char *str)
+{
+	if (strcmp(str, this->text)) {
+		strncpy(this->text, str, sizeof this->text);
+		this->dirty = true;
+	}
+}

pui/label.h

@@ -0,0 +1,16 @@
+#ifndef LABEL_H
+#define LABEL_H
+
+struct Label : Widget {
+	Colour colour;
+	char text[64];
+	bool dirty;
+	float cx;
+	float cy;
+
+	/* virtual */ void OnPaint(const PUi *pui) const;
+
+	void SetLabel(const char *str);
+};
+
+#endif /* LABEL_H */

pui/pui.h

@@ -1,9 +1,12 @@
 #ifndef PUI_H
 #define PUI_H
 
+#include <FTGL/ftgl.h>
+
 #include "textures.h"
 #include "widget.h"
 #include "container.h"
+#include "label.h"
 #include "knob.h"
 #include "slider.h"
 
@@ -11,6 +14,7 @@ struct PUi : PTextures {
 	PuglView *view;
 	Container *widget;
 
+	Label *tooltip;
 	Widget *active;
 	int mx, my, mb, mm;
 	float scale;

pui/slider.cpp

@@ -209,6 +209,26 @@ void VSlider::OnPaint(const PUi *pui) const
 
 	glDisable(GL_TEXTURE_2D);
 
+	char tmp[128];
+	snprintf(tmp, sizeof tmp, "%s", this->label);
+
+	FTBBox box = pui->font->BBox(tmp);
+	FTPoint p = box.Upper() - box.Lower();
+	float cx = p.X();
+	float cy = p.Y();
+
+	float ox = -.5f;
+	float oy = 0;
+
+	glPushMatrix();
+//	glColor4f(colour.r, colour.g, colour.b, colour.a);
+	glColor4f(1, 1, 1, 1);
+	glTranslatef(x + w * 0.5f, y - 4, 0);
+	glScalef(.5f, -.5f, 1);
+	glTranslatef(cx * ox, -cy * oy, 0);
+	pui->font->Render(tmp);
+	glPopMatrix();
+
 	if (this->active) {
 	glBegin(GL_LINE_LOOP);
 	glColor4f(1.f, 1.f, 1.0f, 0.25f);

pui/textures.cpp

@@ -11,6 +11,8 @@
 #include "textures/trough2-vertical.c"
 #include "textures/knob4.c"
 
+#include "textures/font.c"
+
 void PTextures::BindTexture(int texture, int width, int height, const unsigned char *data, int format)
 {
 	glBindTexture(GL_TEXTURE_2D, tex[texture]);
@@ -87,4 +89,9 @@ void PTextures::InitTextures()
 		knob4.width,
 		knob4.height,
 		knob4.pixel_data);
+
+	this->font = new FTTextureFont(font_data, font_data_len);
+//	this->font = FTGL::ftglCreateTextureFont("/usr/share/fonts/truetype/droid/DroidSans.ttf");
+	this->font->FaceSize(20);
+//	FTGL::ftglSetFontFaceSize(this->font, 12, 12);
 }

pui/textures.h

@@ -25,6 +25,8 @@ struct PTextures {
 	int w[TEX_END];
 	int h[TEX_END];
 
+	FTFont *font;
+
 	void InitTextures();
 	void BindTexture(int texture, int width, int height, const unsigned char *data, int format = GL_RGBA);
 };

pui/widget.cpp

@@ -10,6 +10,8 @@ bool Widget::SetValue(float newvalue)
 	/* Value is different? */
 	if (newvalue == this->value) return false;
 
+	snprintf(this->text, sizeof this->text, "%s: %0.4f", this->label, newvalue);
+
 	this->value = newvalue;
 	return true;
 }

pui/widget.h

@@ -32,6 +32,9 @@ struct Widget : Rect {
 	float min;
 	float max;
 	float value;
+	char group[128];
+	char label[128];
+	char text[128];
 
 	bool active;