纸张尺寸和DPI选项动态调整（500DPI以上和最大尺寸不相容）

hgdriver/hgdev/hg_scanner.cpp

@@ -8,6 +8,7 @@
 #include <direct.h>
 #endif
 
+#define DYN_JSON_BETWEEN_PAPER_AND_DPI
 
 #if defined(WIN32) || defined(_WIN64) 
 static int load_dll(const wchar_t* path_dll, HMODULE* dll)
@@ -1650,6 +1651,22 @@ int hg_scanner::setting_paper(void* data, long* len)
 	if(old != image_prc_param_.bits.paper)
 		reset_custom_area_range(image_prc_param_.bits.paper);
 
+#ifdef DYN_JSON_BETWEEN_PAPER_AND_DPI
+	int	max_papers[] = { PAPER_MAX_SIZE, PAPER_MAX_SIZE_CLIP, PAPER_TRIGEMINY }, max_dpi = 600;
+	for (auto& v : max_papers)
+	{
+		if (paper_string(v) == (char*)data)
+		{
+			max_dpi = 499;
+			break;
+		}
+	}
+	if (setting_jsn_.at(SANE_STD_OPT_NAME_RESOLUTION).at("range").count("max"))
+	{
+		setting_jsn_.at(SANE_STD_OPT_NAME_RESOLUTION).at("range").at("max") = max_dpi;
+	}
+#endif
+
 	return SCANNER_ERR_RELOAD_OPT_PARAM; // ret;
 }
 int hg_scanner::setting_paper_check(void* data, long* len)
@@ -1744,6 +1761,62 @@ int hg_scanner::setting_resolution(void* data, long* len)
 	VLOG_MINI_3(LOG_LEVEL_DEBUG_INFO, "Change resolution from %d to %d = %s\n", old, *((int*)data), hg_scanner_err_name(ret));
 	//*((int*)data) = resolution_;
 
+#ifdef DYN_JSON_BETWEEN_PAPER_AND_DPI
+	int	max_papers[] = { PAPER_MAX_SIZE, PAPER_MAX_SIZE_CLIP, PAPER_TRIGEMINY };
+	//std::string	now(setting_jsn_.at(SANE_STD_OPT_NAME_PAPER).at("range").dump());
+
+	if (resolution_ >= 500)
+	{
+		// erase max papers ...
+		for (auto& v : max_papers)
+		{
+			std::string	str(paper_string(v));
+			int			id = lang_get_string_id(str.c_str(), false);
+			if (id == -1)
+				setting_jsn_.at(SANE_STD_OPT_NAME_PAPER).at("range").erase(str.c_str());
+			else
+			{
+				for (int i = 0; i < setting_jsn_.at(SANE_STD_OPT_NAME_PAPER).at("range").size(); ++i)
+				{
+					int val = 0;
+					setting_jsn_.at(SANE_STD_OPT_NAME_PAPER).at("range").at(i).get_to(val);
+					if (val == id)
+					{
+						setting_jsn_.at(SANE_STD_OPT_NAME_PAPER).at("range").erase(i);
+						break;
+					}
+				}
+			}
+		}
+	}
+	else
+	{
+		for (auto& v : max_papers)
+		{
+			std::string	str(paper_string(v));
+			int			id = lang_get_string_id(str.c_str(), false), val = 0;
+			bool		add = true;
+			for (int i = 0; i < setting_jsn_.at(SANE_STD_OPT_NAME_PAPER).at("range").size(); ++i)
+			{
+				setting_jsn_.at(SANE_STD_OPT_NAME_PAPER).at("range").at(i).get_to(val);
+				if (val == id)
+				{
+					add = false;
+					break;
+				}
+			}
+			if (add)
+			{
+				if(id == -1)
+					setting_jsn_.at(SANE_STD_OPT_NAME_PAPER).at("range").push_back(str);
+				else
+					setting_jsn_.at(SANE_STD_OPT_NAME_PAPER).at("range").push_back(id);
+			}
+		}
+	}
+	// std::string	last(setting_jsn_.at(SANE_STD_OPT_NAME_PAPER).at("range").dump());
+#endif
+
 	return SCANNER_ERR_RELOAD_OPT_PARAM; // ret;
 }
 int hg_scanner::setting_exchagnge(void* data, long* len)

hgsane/sane_hg_mdw.cpp

@@ -532,7 +532,7 @@ hg_sane_middleware::hg_sane_middleware(void) : opt_0_(nullptr), init_ok_(false)
 	
 	if (lang_get_cur_code_page() != DEFAULT_CODE_PAGE)
 		lang_refresh_language();
-	register_language_changed_notify(&hg_sane_middleware::language_changed, true);
+	// register_language_changed_notify(&hg_sane_middleware::language_changed, true);	- called when reload_option
 
 #if !defined(WIN32) && !defined(_WIN64)
 	char	path[512] = { 0 };
@@ -559,15 +559,16 @@ hg_sane_middleware::~hg_sane_middleware()
 
 void hg_sane_middleware::language_changed(int cp, void* param)
 {
-	for (auto& v : hg_sane_middleware::instance()->openning_)
+	hg_sane_middleware::instance()->reload_options();
-	{
+	//for (auto& v : hg_sane_middleware::instance()->openning_)
-		hg_sane_middleware::free_device_inst(v, false);
+	//{
-		
+	//	hg_sane_middleware::free_device_inst(v, false);
-		long count = 0;
+	//	
-		hg_scanner_get_parameter(v->dev, nullptr, NULL, &count);
+	//	long count = 0;
-		for (long ind = 1; ind < count; ++ind)
+	//	hg_scanner_get_parameter(v->dev, nullptr, NULL, &count);
-			hg_sane_middleware::instance()->get_option_descriptor(hg_sane_middleware::scanner_handle_to_sane(v->dev), (void*)ind);
+	//	for (long ind = 1; ind < count; ++ind)
-	}
+	//		hg_sane_middleware::instance()->get_option_descriptor(hg_sane_middleware::scanner_handle_to_sane(v->dev), (void*)ind);
+	//}
 }
 const SANE_Device** hg_sane_middleware::to_sane_device(ScannerInfo* hgscanner, int count)
 {
@@ -969,6 +970,21 @@ void hg_sane_middleware::clear(void)
 	}
 }
 
+void hg_sane_middleware::reload_options(scanner_handle dev)
+{
+	for (auto& v : openning_)
+	{
+		if (dev && dev != v->dev)
+			continue;
+
+		hg_sane_middleware::free_device_inst(v, false);
+
+		long count = 0;
+		hg_scanner_get_parameter(v->dev, nullptr, NULL, &count);
+		for (long ind = 1; ind < count; ++ind)
+			get_option_descriptor(hg_sane_middleware::scanner_handle_to_sane(v->dev), (void*)ind);
+	}
+}
 SANE_Status hg_sane_middleware::open(SANE_String_Const devicename, SANE_Handle* handle, const char* name, const char* pwd, const char* method, char* rsc)
 {
 	scanner_handle	h = NULL;
@@ -1960,7 +1976,8 @@ SANE_Status hg_sane_middleware::set_option(SANE_Handle h, const void* option, SA
 		else if (err == SCANNER_ERR_CONFIGURATION_CHANGED)
 		{
 			VLOG_MINI_1(LOG_LEVEL_DEBUG_INFO, "the setting '%s' affects other options value, RELOAD ...\n", desc_title.c_str());
-			on_SCANNER_ERR_CONFIGURATION_CHANGED(dev);
+			//on_SCANNER_ERR_CONFIGURATION_CHANGED(dev);
+			reload_options(handle);
 			err = (scanner_err)SANE_INFO_RELOAD_OPTIONS;
 		}
 		else if(err == SCANNER_ERR_RELOAD_IMAGE_PARAM)
@@ -1971,7 +1988,8 @@ SANE_Status hg_sane_middleware::set_option(SANE_Handle h, const void* option, SA
 		else if(err == SCANNER_ERR_RELOAD_OPT_PARAM)
 		{
 			VLOG_MINI_1(LOG_LEVEL_DEBUG_INFO, "the setting '%s' affects image parameter and options, APP should re-get image info and reload options...\n", desc_title.c_str());
-			on_SCANNER_ERR_CONFIGURATION_CHANGED(dev);
+			//on_SCANNER_ERR_CONFIGURATION_CHANGED(dev);
+			reload_options(handle);
 			err = (scanner_err)(SANE_INFO_RELOAD_PARAMS | SANE_INFO_RELOAD_OPTIONS);
 		}
 		else if (err == SCANNER_ERR_ACCESS_DENIED)

hgsane/sane_hg_mdw.h

@@ -141,6 +141,7 @@ class hg_sane_middleware
 	static void set_value_to_var(void* val, size_t bytes, void* param);
 	static void set_value_to_new(void* val, size_t bytes, void* param);
 
+	void reload_options(scanner_handle dev = nullptr);
 	SANE_Status open(SANE_String_Const devicename, SANE_Handle* handle, const char* name, const char* pwd, const char* method, char* rsc);
 	SANE_Option_Descriptor* from_json(scanner_handle h, const std::string& name, json* jsn);
 	std::string get_option_json(scanner_handle handle, void* opt, std::string* key = nullptr, SANE_Int* id = nullptr);