5 files changed, 257 insertions, 0 deletions
diff --git a/subsurface-core/CMakeLists.txt b/subsurface-core/CMakeLists.txt
index e7f531527..60efb7d92 100644
--- a/subsurface-core/CMakeLists.txt
+++ b/subsurface-core/CMakeLists.txt
@@ -70,6 +70,8 @@ set(SUBSURFACE_CORE_LIB_SRCS
 	divelogexportlogic.cpp
 	qt-init.cpp
 	qtserialbluetooth.cpp
+	metrics.cpp
+	color.cpp
 	${SERIAL_FTDI}
 	${PLATFORM_SRC}
 	${BT_CORE_SRC_FILES}
diff --git a/subsurface-core/color.cpp b/subsurface-core/color.cpp
new file mode 100644
index 000000000..cf6f43916
--- /dev/null
+++ b/subsurface-core/color.cpp
@@ -0,0 +1,88 @@
+#include "color.h"
+
+QMap<color_indice_t, QVector<QColor> > profile_color;
+
+void fill_profile_color()
+{
+#define COLOR(x, y, z) QVector<QColor>() << x << y << z;
+	profile_color[SAC_1] = COLOR(FUNGREEN1, BLACK1_LOW_TRANS, FUNGREEN1);
+	profile_color[SAC_2] = COLOR(APPLE1, BLACK1_LOW_TRANS, APPLE1);
+	profile_color[SAC_3] = COLOR(ATLANTIS1, BLACK1_LOW_TRANS, ATLANTIS1);
+	profile_color[SAC_4] = COLOR(ATLANTIS2, BLACK1_LOW_TRANS, ATLANTIS2);
+	profile_color[SAC_5] = COLOR(EARLSGREEN1, BLACK1_LOW_TRANS, EARLSGREEN1);
+	profile_color[SAC_6] = COLOR(HOKEYPOKEY1, BLACK1_LOW_TRANS, HOKEYPOKEY1);
+	profile_color[SAC_7] = COLOR(TUSCANY1, BLACK1_LOW_TRANS, TUSCANY1);
+	profile_color[SAC_8] = COLOR(CINNABAR1, BLACK1_LOW_TRANS, CINNABAR1);
+	profile_color[SAC_9] = COLOR(REDORANGE1, BLACK1_LOW_TRANS, REDORANGE1);
+
+	profile_color[VELO_STABLE] = COLOR(CAMARONE1, BLACK1_LOW_TRANS, CAMARONE1);
+	profile_color[VELO_SLOW] = COLOR(LIMENADE1, BLACK1_LOW_TRANS, LIMENADE1);
+	profile_color[VELO_MODERATE] = COLOR(RIOGRANDE1, BLACK1_LOW_TRANS, RIOGRANDE1);
+	profile_color[VELO_FAST] = COLOR(PIRATEGOLD1, BLACK1_LOW_TRANS, PIRATEGOLD1);
+	profile_color[VELO_CRAZY] = COLOR(RED1, BLACK1_LOW_TRANS, RED1);
+
+	profile_color[PO2] = COLOR(APPLE1, BLACK1_LOW_TRANS, APPLE1);
+	profile_color[PO2_ALERT] = COLOR(RED1, BLACK1_LOW_TRANS, RED1);
+	profile_color[PN2] = COLOR(BLACK1_LOW_TRANS, BLACK1_LOW_TRANS, BLACK1_LOW_TRANS);
+	profile_color[PN2_ALERT] = COLOR(RED1, BLACK1_LOW_TRANS, RED1);
+	profile_color[PHE] = COLOR(PEANUT, BLACK1_LOW_TRANS, PEANUT);
+	profile_color[PHE_ALERT] = COLOR(RED1, BLACK1_LOW_TRANS, RED1);
+	profile_color[O2SETPOINT] = COLOR(RED1, BLACK1_LOW_TRANS, RED1);
+	profile_color[CCRSENSOR1] = COLOR(TUNDORA1_MED_TRANS, BLACK1_LOW_TRANS, TUNDORA1_MED_TRANS);
+	profile_color[CCRSENSOR2] = COLOR(ROYALBLUE2_LOW_TRANS, BLACK1_LOW_TRANS, ROYALBLUE2_LOW_TRANS);
+	profile_color[CCRSENSOR3] = COLOR(PEANUT, BLACK1_LOW_TRANS, PEANUT);
+	profile_color[PP_LINES] = COLOR(BLACK1_HIGH_TRANS, BLACK1_LOW_TRANS, BLACK1_HIGH_TRANS);
+
+	profile_color[TEXT_BACKGROUND] = COLOR(CONCRETE1_LOWER_TRANS, WHITE1, CONCRETE1_LOWER_TRANS);
+	profile_color[ALERT_BG] = COLOR(BROOM1_LOWER_TRANS, BLACK1_LOW_TRANS, BROOM1_LOWER_TRANS);
+	profile_color[ALERT_FG] = COLOR(BLACK1_LOW_TRANS, WHITE1, BLACK1_LOW_TRANS);
+	profile_color[EVENTS] = COLOR(REDORANGE1, BLACK1_LOW_TRANS, REDORANGE1);
+	profile_color[SAMPLE_DEEP] = COLOR(QColor(Qt::red).darker(), BLACK1, PERSIANRED1);
+	profile_color[SAMPLE_SHALLOW] = COLOR(QColor(Qt::red).lighter(), BLACK1_LOW_TRANS, PERSIANRED1);
+	profile_color[SMOOTHED] = COLOR(REDORANGE1_HIGH_TRANS, BLACK1_LOW_TRANS, REDORANGE1_HIGH_TRANS);
+	profile_color[MINUTE] = COLOR(MEDIUMREDVIOLET1_HIGHER_TRANS, BLACK1_LOW_TRANS, MEDIUMREDVIOLET1_HIGHER_TRANS);
+	profile_color[TIME_GRID] = COLOR(WHITE1, BLACK1_HIGH_TRANS, TUNDORA1_MED_TRANS);
+	profile_color[TIME_TEXT] = COLOR(FORESTGREEN1, BLACK1, FORESTGREEN1);
+	profile_color[DEPTH_GRID] = COLOR(WHITE1, BLACK1_HIGH_TRANS, TUNDORA1_MED_TRANS);
+	profile_color[MEAN_DEPTH] = COLOR(REDORANGE1_MED_TRANS, BLACK1_LOW_TRANS, REDORANGE1_MED_TRANS);
+	profile_color[HR_PLOT] = COLOR(REDORANGE1_MED_TRANS, BLACK1_LOW_TRANS, REDORANGE1_MED_TRANS);
+	profile_color[HR_TEXT] = COLOR(REDORANGE1_MED_TRANS, BLACK1_LOW_TRANS, REDORANGE1_MED_TRANS);
+	profile_color[HR_AXIS] = COLOR(MED_GRAY_HIGH_TRANS, MED_GRAY_HIGH_TRANS, MED_GRAY_HIGH_TRANS);
+	profile_color[DEPTH_BOTTOM] = COLOR(GOVERNORBAY1_MED_TRANS, BLACK1_HIGH_TRANS, GOVERNORBAY1_MED_TRANS);
+	profile_color[DEPTH_TOP] = COLOR(MERCURY1_MED_TRANS, WHITE1_MED_TRANS, MERCURY1_MED_TRANS);
+	profile_color[TEMP_TEXT] = COLOR(GOVERNORBAY2, BLACK1_LOW_TRANS, GOVERNORBAY2);
+	profile_color[TEMP_PLOT] = COLOR(ROYALBLUE2_LOW_TRANS, BLACK1_LOW_TRANS, ROYALBLUE2_LOW_TRANS);
+	profile_color[SAC_DEFAULT] = COLOR(WHITE1, BLACK1_LOW_TRANS, FORESTGREEN1);
+	profile_color[BOUNDING_BOX] = COLOR(WHITE1, BLACK1_LOW_TRANS, TUNDORA1_MED_TRANS);
+	profile_color[PRESSURE_TEXT] = COLOR(KILLARNEY1, BLACK1_LOW_TRANS, KILLARNEY1);
+	profile_color[BACKGROUND] = COLOR(SPRINGWOOD1, WHITE1, SPRINGWOOD1);
+	profile_color[BACKGROUND_TRANS] = COLOR(SPRINGWOOD1_MED_TRANS, WHITE1_MED_TRANS, SPRINGWOOD1_MED_TRANS);
+	profile_color[CEILING_SHALLOW] = COLOR(REDORANGE1_HIGH_TRANS, BLACK1_HIGH_TRANS, REDORANGE1_HIGH_TRANS);
+	profile_color[CEILING_DEEP] = COLOR(RED1_MED_TRANS, BLACK1_HIGH_TRANS, RED1_MED_TRANS);
+	profile_color[CALC_CEILING_SHALLOW] = COLOR(FUNGREEN1_HIGH_TRANS, BLACK1_HIGH_TRANS, FUNGREEN1_HIGH_TRANS);
+	profile_color[CALC_CEILING_DEEP] = COLOR(APPLE1_HIGH_TRANS, BLACK1_HIGH_TRANS, APPLE1_HIGH_TRANS);
+	profile_color[TISSUE_PERCENTAGE] = COLOR(GOVERNORBAY2, BLACK1_LOW_TRANS, GOVERNORBAY2);
+	profile_color[GF_LINE] = COLOR(BLACK1, BLACK1_LOW_TRANS, BLACK1);
+	profile_color[AMB_PRESSURE_LINE] = COLOR(TUNDORA1_MED_TRANS, BLACK1_LOW_TRANS, ATLANTIS1);
+#undef COLOR
+}
+
+QColor getColor(const color_indice_t i, bool isGrayscale)
+{
+	if (profile_color.count() > i && i >= 0)
+		return profile_color[i].at((isGrayscale) ? 1 : 0);
+	return QColor(Qt::black);
+}
+
+QColor getSacColor(int sac, int avg_sac)
+{
+	int sac_index = 0;
+	int delta = sac - avg_sac + 7000;
+
+	sac_index = delta / 2000;
+	if (sac_index < 0)
+		sac_index = 0;
+	if (sac_index > SAC_COLORS - 1)
+		sac_index = SAC_COLORS - 1;
+	return getColor((color_indice_t)(SAC_COLORS_START_IDX + sac_index), false);
+}
diff --git a/subsurface-core/color.h b/subsurface-core/color.h
index 7938e59a6..57ad77242 100644
--- a/subsurface-core/color.h
+++ b/subsurface-core/color.h
@@ -5,6 +5,8 @@
    from http://chir.ag/projects/name-that-color */
 
 #include <QColor>
+#include <QMap>
+#include <QVector>
 
 // Greens
 #define CAMARONE1 QColor::fromRgbF(0.0, 0.4, 0.0, 1)
@@ -64,4 +66,87 @@
 // Magentas
 #define MEDIUMREDVIOLET1_HIGHER_TRANS QColor::fromRgbF(0.7, 0.2, 0.7, 0.1)
 
+#define SAC_COLORS_START_IDX SAC_1
+#define SAC_COLORS 9
+#define VELOCITY_COLORS_START_IDX VELO_STABLE
+#define VELOCITY_COLORS 5
+
+typedef enum {
+	/* SAC colors. Order is important, the SAC_COLORS_START_IDX define above. */
+	SAC_1,
+	SAC_2,
+	SAC_3,
+	SAC_4,
+	SAC_5,
+	SAC_6,
+	SAC_7,
+	SAC_8,
+	SAC_9,
+
+	/* Velocity colors.  Order is still important, ref VELOCITY_COLORS_START_IDX. */
+	VELO_STABLE,
+	VELO_SLOW,
+	VELO_MODERATE,
+	VELO_FAST,
+	VELO_CRAZY,
+
+	/* gas colors */
+	PO2,
+	PO2_ALERT,
+	PN2,
+	PN2_ALERT,
+	PHE,
+	PHE_ALERT,
+	O2SETPOINT,
+	CCRSENSOR1,
+	CCRSENSOR2,
+	CCRSENSOR3,
+	PP_LINES,
+
+	/* Other colors */
+	TEXT_BACKGROUND,
+	ALERT_BG,
+	ALERT_FG,
+	EVENTS,
+	SAMPLE_DEEP,
+	SAMPLE_SHALLOW,
+	SMOOTHED,
+	MINUTE,
+	TIME_GRID,
+	TIME_TEXT,
+	DEPTH_GRID,
+	MEAN_DEPTH,
+	HR_TEXT,
+	HR_PLOT,
+	HR_AXIS,
+	DEPTH_TOP,
+	DEPTH_BOTTOM,
+	TEMP_TEXT,
+	TEMP_PLOT,
+	SAC_DEFAULT,
+	BOUNDING_BOX,
+	PRESSURE_TEXT,
+	BACKGROUND,
+	BACKGROUND_TRANS,
+	CEILING_SHALLOW,
+	CEILING_DEEP,
+	CALC_CEILING_SHALLOW,
+	CALC_CEILING_DEEP,
+	TISSUE_PERCENTAGE,
+	GF_LINE,
+	AMB_PRESSURE_LINE
+} color_indice_t;
+
+extern QMap<color_indice_t, QVector<QColor> > profile_color;
+void fill_profile_color();
+QColor getColor(const color_indice_t i, bool isGrayscale = false);
+QColor getSacColor(int sac, int diveSac);
+struct text_render_options {
+	double size;
+	color_indice_t color;
+	double hpos, vpos;
+};
+
+typedef text_render_options text_render_options_t;
+
 #endif // COLOR_H
diff --git a/subsurface-core/metrics.cpp b/subsurface-core/metrics.cpp
new file mode 100644
index 000000000..203c2e5e2
--- /dev/null
+++ b/subsurface-core/metrics.cpp
@@ -0,0 +1,50 @@
+/*
+ * metrics.cpp
+ *
+ * methods to find/compute essential UI metrics
+ * (font properties, icon sizes, etc)
+ *
+ */
+
+#include "metrics.h"
+
+static IconMetrics dfltIconMetrics = { -1 };
+
+QFont defaultModelFont()
+{
+	QFont font;
+//	font.setPointSizeF(font.pointSizeF() * 0.8);
+	return font;
+}
+
+QFontMetrics defaultModelFontMetrics()
+{
+	return QFontMetrics(defaultModelFont());
+}
+
+// return the default icon size, computed as the multiple of 16 closest to
+// the given height
+static int defaultIconSize(int height)
+{
+	int ret = (height + 8)/16;
+	ret *= 16;
+	if (ret < 16)
+		ret = 16;
+	return ret;
+}
+
+const IconMetrics & defaultIconMetrics()
+{
+	if (dfltIconMetrics.sz_small == -1) {
+		int small = defaultIconSize(defaultModelFontMetrics().height());
+		dfltIconMetrics.sz_small = small;
+		dfltIconMetrics.sz_med = small + small/2;
+		dfltIconMetrics.sz_big = 2*small;
+
+		dfltIconMetrics.sz_pic = 8*small;
+
+		dfltIconMetrics.spacing = small/8;
+	}
+
+	return dfltIconMetrics;
+}
diff --git a/subsurface-core/metrics.h b/subsurface-core/metrics.h
new file mode 100644
index 000000000..30295a3d8
--- /dev/null
+++ b/subsurface-core/metrics.h
@@ -0,0 +1,32 @@
+/*
+ * metrics.h
+ *
+ * header file for common function to find/compute essential UI metrics
+ * (font properties, icon sizes, etc)
+ *
+ */
+#ifndef METRICS_H
+#define METRICS_H
+
+#include <QFont>
+#include <QFontMetrics>
+#include <QSize>
+
+QFont defaultModelFont();
+QFontMetrics defaultModelFontMetrics();
+
+// Collection of icon/picture sizes and other metrics, resolution independent
+struct IconMetrics {
+	// icon sizes
+	int sz_small; // ex 16px
+	int sz_med; // ex 24px
+	int sz_big; // ex 32px
+	// picture size
+	int sz_pic; // ex 128px
+	// icon spacing
+	int spacing; // ex 2px
+};
+
+const IconMetrics & defaultIconMetrics();
+
+#endif // METRICS_H