CComponentsFooter: add functionality to add button labels via struct

This function uses struct label like old button label function
see /gui/widget/buttons.cpp, but can also use strings in structs

also possible: add single button with text or locale

src/gui/components/cc_frm_footer.cpp

@@ -81,7 +81,84 @@ void CComponentsFooter::initVarFooter(	const int& x_pos, const int& y_pos, const
 	corner_rad	= RADIUS_LARGE;
 	corner_type	= CORNER_BOTTOM;
 
+	btn_contour	= false;
+
 	addContextButton(buttons);
 	initCCItems();
 	initParent(parent);
 }
+
+void CComponentsFooter::setButtonLabels(const struct button_label_s * const content, const size_t& label_count, const int& total_width, const int& label_width)
+{
+	//define required total width of button group, minimal width is >0, sensless values are nonsens! 
+	int w_total = total_width > 0 ? total_width : width;//TODO: alow and handle only with rational values >0
+	//consider context button group on the right side of footer, if exist then subtract result from total width of button container
+	if (cch_btn_obj)
+		w_total -= cch_btn_obj->getWidth();
+
+	//calculate required position of button container
+	//consider icon (inherited) width, if exist then set evaluated result as x position for button label container and ...
+	int x_btnchain = 0;
+	if (cch_icon_obj)
+		x_btnchain = (cch_icon_obj->getXPos() + cch_offset + cch_icon_obj->getWidth());
+	//... reduce also total width for button label container
+	w_total -= x_btnchain;
+
+	//initialize a sub form (item chain as button label container): this contains all passed (as interleaved) button label items, with this container we can work within
+	//footer as primary container (in this context '=this') and the parent for the button label container and
+	//button label container itself is concurrent the parent object for button objects
+	CComponentsFrmChain *btnchain = new CComponentsFrmChain(x_btnchain, CC_CENTERED, w_total, height, 0, CC_DIR_X, this);
+	btnchain->doPaintBg(false);
+
+	//calculate matching maximal possible width of button lable within button label container
+	int w_btn_max = btnchain->getWidth() / label_count;
+	int w_btn = min(label_width, w_btn_max);
+
+	//unused size, usable for offset calculation
+	int w_btn_unused = w_total - w_btn * label_count;
+
+	//consider offset of button labels
+	int w_btn_offset = w_btn_unused / (label_count+1);
+	btnchain->setAppendOffset(w_btn_offset, 0);
+
+	//finally generate button objects passed from button label content.
+	for (size_t i= 0; i< label_count; i++){
+		CComponentsButton *btn = new CComponentsButton(CC_APPEND, CC_CENTERED, w_btn, height-height/4, content[i].text, content[i].button);
+		btn->doPaintBg(btn_contour);
+		btnchain->addCCItem(btn);
+	}
+}
+
+void CComponentsFooter::setButtonLabels(const struct button_label_l * const content, const size_t& label_count, const int& total_width, const int& label_width)
+{
+	button_label_s buttons[label_count];
+	
+	for (size_t i= 0; i< label_count; i++){
+		buttons[i].button = content[i].button;
+		buttons[i].text = g_Locale->getText(content[i].locale);
+	}
+
+	setButtonLabels(buttons, label_count, total_width, label_width);
+}
+
+void CComponentsFooter::setButtonLabels(const struct button_label * const content, const size_t& label_count, const int& total_width, const int& label_width)
+{
+	setButtonLabels((button_label_l*)content, label_count, total_width, label_width);
+}
+
+void CComponentsFooter::setButtonLabel(const char *button_icon, const std::string& text, const int& total_width, const int& label_width)
+{
+	button_label_s button[1];
+
+	button[0].button = button_icon;
+	button[0].text = text;
+
+	setButtonLabels(button, 1, total_width, label_width);
+}
+
+void CComponentsFooter::setButtonLabel(const char *button_icon, const neutrino_locale_t& locale, const int& total_width, const int& label_width)
+{
+	string txt = g_Locale->getText(locale);
+
+	setButtonLabel(button_icon, txt, total_width, label_width);
+}

src/gui/components/cc_frm_footer.h

@@ -26,6 +26,21 @@
 
 
 #include "cc_frm_header.h"
+#include "cc_frm_button.h"
+#include <gui/widget/buttons.h> //for compatibility with 'button_label' type
+
+//for 'button_label' type with string
+typedef struct button_label_s
+{
+	const char *		button;
+	std::string 		text;
+} button_label_s_struct;
+
+typedef struct button_label_l
+{
+	const char *      button;
+	neutrino_locale_t locale;
+} button_label_l_struct;
 
 /*!
 CComponentsFooter, sub class of CComponentsHeader provides prepared container for footer
@@ -33,7 +48,7 @@ Is mostly usable like a header but without caption, and context button icons.
 */
 class CComponentsFooter : public CComponentsHeader
 {
-	protected:
+	private:
 		void initVarFooter(	const int& x_pos, const int& y_pos, const int& w, const int& h = 0,
 					const int& buttons = 0,
 					CComponentsForm *parent = NULL,
@@ -41,7 +56,12 @@ class CComponentsFooter : public CComponentsHeader
 					fb_pixel_t color_frame = COL_MENUCONTENT_PLUS_6,
 					fb_pixel_t color_body = COL_INFOBAR_SHADOW_PLUS_1,
 					fb_pixel_t color_shadow = COL_MENUCONTENTDARK_PLUS_0);
+
+		///show button frame and background, default false
+		bool btn_contour;
+
 	public:
+		
 		CComponentsFooter(CComponentsForm *parent = NULL);
 		CComponentsFooter(	const int& x_pos, const int& y_pos, const int& w, const int& h = 0,
 					const int& buttons = 0,
@@ -50,6 +70,23 @@ class CComponentsFooter : public CComponentsHeader
 					fb_pixel_t color_frame = COL_MENUCONTENT_PLUS_6,
 					fb_pixel_t color_body = COL_INFOBAR_SHADOW_PLUS_1,
 					fb_pixel_t color_shadow = COL_MENUCONTENTDARK_PLUS_0);
+
+		///add button labels with string label type as content, count as size_t, total_width as int, label width as int
+		void setButtonLabels(const struct button_label_s * const content, const size_t& label_count, const int& total_width = 0, const int& label_width = 0);
+		///add button labels with locale label type as content, count as size_t, total_width as int, label width as int
+		void setButtonLabels(const struct button_label_l * const content, const size_t& label_count, const int& total_width = 0, const int& label_width = 0);
+		
+		///add button labels with old label type, count as size_t, total_width as int, label width as int
+		///NOTE: for compatibility with older button handler find in gui/widget/buttons.h
+		void setButtonLabels(const struct button_label * const content, const size_t& label_count, const int& total_width = 0, const int& label_width = 0);
+
+		///add single button label with string label type as content, total_width as int, label width as int
+		void setButtonLabel(const char *button_icon, const std::string& text, const int& total_width = 0, const int& label_width = 0);
+		///add single button label with locale label type as content, total_width as int, label width as int
+		void setButtonLabel(const char *button_icon, const neutrino_locale_t& locale, const int& total_width = 0, const int& label_width = 0);
+		
+		///causes show/hide countour of button frame and background, parameter bool show, default= true
+		void showButtonContour(bool show = true){btn_contour = show;};
 };
 
 #endif