energy/cef/types-print-handler.go

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//----------------------------------------
//
// Copyright © yanghy. All Rights Reserved.
//
// Licensed under Apache License Version 2.0, January 2004
//
// https://www.apache.org/licenses/LICENSE-2.0
//
//----------------------------------------
package cef
import (
"github.com/energye/energy/v2/cef/internal/def"
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"github.com/energye/energy/v2/common/imports"
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"github.com/energye/golcl/lcl"
"github.com/energye/golcl/lcl/api"
"unsafe"
)
// ************************** creates ************************** //
// PrintHandlerRef -> ICefPrintHandler
var PrintHandlerRef printSpanHandler
type printSpanHandler uintptr
func (*printSpanHandler) New() *ICefPrintHandler {
var result uintptr
imports.Proc(def.CefPrintHandlerRef_Create).Call(uintptr(unsafe.Pointer(&result)))
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if result != 0 {
return &ICefPrintHandler{instance: unsafe.Pointer(result)}
}
return nil
}
// ************************** impl ************************** //
// Instance 实例
func (m *ICefPrintHandler) Instance() uintptr {
if m == nil {
return 0
}
return uintptr(m.instance)
}
func (m *ICefPrintHandler) Free() {
if m.instance != nil {
m.base.Free(m.Instance())
m.instance = nil
}
}
func (m *ICefPrintHandler) IsValid() bool {
if m == nil || m.instance == nil {
return false
}
return m.instance != nil
}
func (m *ICefPrintHandler) SetOnPrintStart(fn onPrintStart) {
if !m.IsValid() {
return
}
imports.Proc(def.CefPrintHandler_OnPrintStart).Call(m.Instance(), api.MakeEventDataPtr(fn))
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}
func (m *ICefPrintHandler) SetOnPrintSettings(fn onPrintSettings) {
if !m.IsValid() {
return
}
imports.Proc(def.CefPrintHandler_OnPrintSettings).Call(m.Instance(), api.MakeEventDataPtr(fn))
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}
func (m *ICefPrintHandler) SetOnPrintDialog(fn onPrintDialog) {
if !m.IsValid() {
return
}
imports.Proc(def.CefPrintHandler_OnPrintDialog).Call(m.Instance(), api.MakeEventDataPtr(fn))
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}
func (m *ICefPrintHandler) SetOnPrintJob(fn onPrintJob) {
if !m.IsValid() {
return
}
imports.Proc(def.CefPrintHandler_OnPrintJob).Call(m.Instance(), api.MakeEventDataPtr(fn))
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}
func (m *ICefPrintHandler) SetOnPrintReset(fn onPrintReset) {
if !m.IsValid() {
return
}
imports.Proc(def.CefPrintHandler_OnPrintReset).Call(m.Instance(), api.MakeEventDataPtr(fn))
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}
func (m *ICefPrintHandler) SetGetPDFPaperSize(fn getPDFPaperSize) {
if !m.IsValid() {
return
}
imports.Proc(def.CefPrintHandler_GetPDFPaperSize).Call(m.Instance(), api.MakeEventDataPtr(fn))
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}
// ************************** events ************************** //
type onPrintStart func(browser *ICefBrowser)
type onPrintSettings func(browser *ICefBrowser, settings *ICefPrintSettings, getDefaults bool)
type onPrintDialog func(browser *ICefBrowser, hasSelection bool, callback *ICefPrintDialogCallback) bool
type onPrintJob func(browser *ICefBrowser, documentName, PDFFilePath string, callback *ICefPrintJobCallback) bool
type onPrintReset func(browser *ICefBrowser)
type getPDFPaperSize func(browser *ICefBrowser, deviceUnitsPerInch int32) *TCefSize
func init() {
lcl.RegisterExtEventCallback(func(fn interface{}, getVal func(idx int) uintptr) bool {
getPtr := func(i int) unsafe.Pointer {
return unsafe.Pointer(getVal(i))
}
switch fn.(type) {
case onPrintStart:
browse := &ICefBrowser{instance: getPtr(0)}
fn.(onPrintStart)(browse)
case onPrintSettings:
browse := &ICefBrowser{instance: getPtr(0)}
settings := &ICefPrintSettings{instance: getPtr(1)}
getDefaults := api.GoBool(getVal(2))
fn.(onPrintSettings)(browse, settings, getDefaults)
case onPrintDialog:
browse := &ICefBrowser{instance: getPtr(0)}
hasSelection := api.GoBool(getVal(1))
callback := &ICefPrintDialogCallback{instance: getPtr(2)}
result := (*bool)(getPtr(3))
*result = fn.(onPrintDialog)(browse, hasSelection, callback)
case onPrintJob:
browse := &ICefBrowser{instance: getPtr(0)}
documentName, PDFFilePath := api.GoStr(getVal(1)), api.GoStr(getVal(2))
callback := &ICefPrintJobCallback{instance: getPtr(3)}
result := (*bool)(getPtr(4))
*result = fn.(onPrintJob)(browse, documentName, PDFFilePath, callback)
case onPrintReset:
browse := &ICefBrowser{instance: getPtr(0)}
fn.(onPrintReset)(browse)
case getPDFPaperSize:
browse := &ICefBrowser{instance: getPtr(0)}
deviceUnitsPerInch := int32(getVal(1))
sizePtr := (*uintptr)(getPtr(2))
size := fn.(getPDFPaperSize)(browse, deviceUnitsPerInch)
if size != nil {
*sizePtr = uintptr(unsafe.Pointer(size))
}
default:
return false
}
return true
})
}